102111110112021 has 16 divisors (see below), whose sum is σ = 139983478510848. Its totient is φ = 66168661017600.

The previous prime is 102111110112001. The next prime is 102111110112023. The reversal of 102111110112021 is 120211011111201.

It is not a de Polignac number, because 102111110112021 - 2⁶ = 102111110111957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111110112023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1531648636 + ... + 1531715301.

It is an arithmetic number, because the mean of its divisors is an integer number (8748967406928).

Almost surely, 2^{102111110112021} is an apocalyptic number.

It is an amenable number.

102111110112021 is a deficient number, since it is larger than the sum of its proper divisors (37872368398827).

102111110112021 is a wasteful number, since it uses less digits than its factorization.

102111110112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3063364252.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 102111110112021 its reverse (120211011111201), we get a palindrome (222322121223222).

The spelling of 102111110112021 in words is "one hundred two trillion, one hundred eleven billion, one hundred ten million, one hundred twelve thousand, twenty-one".