102010012111021 has 16 divisors (see below), whose sum is σ = 121316034470400. Its totient is φ = 83956210189488.

The previous prime is 102010012111001. The next prime is 102010012111027. The reversal of 102010012111021 is 120111210010201.

It is a happy number.

It is not a de Polignac number, because 102010012111021 - 2¹¹ = 102010012108973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102010012110992 and 102010012111010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102010012111027) 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, 2872047451 + ... + 2872082968.

It is an arithmetic number, because the mean of its divisors is an integer number (7582252154400).

Almost surely, 2^{102010012111021} is an apocalyptic number.

It is an amenable number.

102010012111021 is a deficient number, since it is larger than the sum of its proper divisors (19306022359379).

102010012111021 is an equidigital number, since it uses as much as digits as its factorization.

102010012111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5744130528.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102010012111021 its reverse (120111210010201), we get a palindrome (222121222121222).

The spelling of 102010012111021 in words is "one hundred two trillion, ten billion, twelve million, one hundred eleven thousand, twenty-one".