100012120010021 has 16 divisors (see below), whose sum is σ = 105872918659200. Its totient is φ = 94312384571328.

The previous prime is 100012120009973. The next prime is 100012120010093. The reversal of 100012120010021 is 120010021210001.

It is a cyclic number.

It is not a de Polignac number, because 100012120010021 - 2¹⁴ = 100012119993637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100012120009984 and 100012120010011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100012120010221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19664600 + ... + 24222318.

It is an arithmetic number, because the mean of its divisors is an integer number (6617057416200).

Almost surely, 2^{100012120010021} is an apocalyptic number.

It is an amenable number.

100012120010021 is a deficient number, since it is larger than the sum of its proper divisors (5860798649179).

100012120010021 is a wasteful number, since it uses less digits than its factorization.

100012120010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4575388.

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

Adding to 100012120010021 its reverse (120010021210001), we get a palindrome (220022141220022).

The spelling of 100012120010021 in words is "one hundred trillion, twelve billion, one hundred twenty million, ten thousand, twenty-one".