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1010011212020 = 22550500560601
BaseRepresentation
bin11101011001010010101…
…11000000100011110100
310120120000102021200121102
432230221113000203310
5113022000332241040
62051554233305232
7132654006436046
oct16545127004364
93516012250542
101010011212020
1135a385aa8738
121438b6865218
13743223b0435
1436c55c87a96
151b4155db515
hexeb295c08f4

1010011212020 has 12 divisors (see below), whose sum is σ = 2121023545284. Its totient is φ = 404004484800.

The previous prime is 1010011212019. The next prime is 1010011212043. The reversal of 1010011212020 is 202121100101.

It can be written as a sum of positive squares in 2 ways, for example, as 236923615504 + 773087596516 = 486748^2 + 879254^2 .

It is a super-2 number, since 2×10100112120202 (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1010011211992 and 1010011212010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25250280281 + ... + 25250280320.

It is an arithmetic number, because the mean of its divisors is an integer number (176751962107).

Almost surely, 21010011212020 is an apocalyptic number.

1010011212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1010011212020 is an abundant number, since it is smaller than the sum of its proper divisors (1111012333264).

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

1010011212020 is a wasteful number, since it uses less digits than its factorization.

1010011212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50500560610 (or 50500560608 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1010011212020 its reverse (202121100101), we get a palindrome (1212132312121).

The spelling of 1010011212020 in words is "one trillion, ten billion, eleven million, two hundred twelve thousand, twenty".

Divisors: 1 2 4 5 10 20 50500560601 101001121202 202002242404 252502803005 505005606010 1010011212020