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20220131110020 = 22351719823657951
BaseRepresentation
bin1001001100011110111011…
…01110110110110010000100
32122121000200200222112112120
410212033131232312302010
510122241312031010040
6111000555555445540
74154566461415512
oct446173556666204
978530620875476
1020220131110020
116496344968146
122326968bb68b0
13b3899a1c461a
144dc933bd34b2
15250e8a8237d0
hex1263ddbb6c84

20220131110020 has 48 divisors (see below), whose sum is σ = 59946741646848. Its totient is φ = 5074856435200.

The previous prime is 20220131109973. The next prime is 20220131110031. The reversal of 20220131110020 is 2001113102202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9911827956 + ... + 9911829995.

It is an arithmetic number, because the mean of its divisors is an integer number (1248890450976).

Almost surely, 220220131110020 is an apocalyptic number.

20220131110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20220131110020 is an abundant number, since it is smaller than the sum of its proper divisors (39726610536828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20220131110020 is a wasteful number, since it uses less digits than its factorization.

20220131110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19823657980 (or 19823657978 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 20220131110020 its reverse (2001113102202), we get a palindrome (22221244212222).

The spelling of 20220131110020 in words is "twenty trillion, two hundred twenty billion, one hundred thirty-one million, one hundred ten thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 17 20 30 34 51 60 68 85 102 170 204 255 340 510 1020 19823657951 39647315902 59470973853 79294631804 99118289755 118941947706 198236579510 237883895412 297354869265 337002185167 396473159020 594709738530 674004370334 1011006555501 1189419477060 1348008740668 1685010925835 2022013111002 3370021851670 4044026222004 5055032777505 6740043703340 10110065555010 20220131110020