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1012102212020 = 22559214537521
BaseRepresentation
bin11101011101001011111…
…11100010100110110100
310120202102010212111100212
432232211333202212310
5113040241131241040
62052541530524552
7133056556600004
oct16564577424664
93522363774325
101012102212020
11360259349a09
1214419ab96758
1374596669943
1436db3870004
151b4d8e76d65
hexeba5fe29b4

1012102212020 has 36 divisors (see below), whose sum is σ = 2162049346884. Its totient is φ = 397979147520.

The previous prime is 1012102212013. The next prime is 1012102212059. The reversal of 1012102212020 is 202122012101.

It can be written as a sum of positive squares in 2 ways, for example, as 326312852644 + 685789359376 = 571238^2 + 828124^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1012102211986 and 1012102212004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7199141 + ... + 7338380.

Almost surely, 21012102212020 is an apocalyptic number.

1012102212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012102212020 is an abundant number, since it is smaller than the sum of its proper divisors (1149947134864).

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

1012102212020 is a wasteful number, since it uses less digits than its factorization.

1012102212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14537648 (or 14537587 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1012102212020 its reverse (202122012101), we get a palindrome (1214224224121).

The spelling of 1012102212020 in words is "one trillion, twelve billion, one hundred two million, two hundred twelve thousand, twenty".

Divisors: 1 2 4 5 10 20 59 118 236 295 590 1180 3481 6962 13924 17405 34810 69620 14537521 29075042 58150084 72687605 145375210 290750420 857713739 1715427478 3430854956 4288568695 8577137390 17154274780 50605110601 101210221202 202420442404 253025553005 506051106010 1012102212020