102112111120121 has 4 divisors (see below), whose sum is σ = 105406050188544. Its totient is φ = 98818172051700.

The previous prime is 102112111120069. The next prime is 102112111120127. The reversal of 102112111120121 is 121021111211201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102112111120121 - 2⁶ = 102112111120057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 102112111120121.

It is not an unprimeable number, because it can be changed into a prime (102112111120127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1646969534165 + ... + 1646969534226.

It is an arithmetic number, because the mean of its divisors is an integer number (26351512547136).

Almost surely, 2^{102112111120121} is an apocalyptic number.

It is an amenable number.

102112111120121 is a deficient number, since it is larger than the sum of its proper divisors (3293939068423).

102112111120121 is an equidigital number, since it uses as much as digits as its factorization.

102112111120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3293939068422.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 102112111120121 its reverse (121021111211201), we get a palindrome (223133222331322).

The spelling of 102112111120121 in words is "one hundred two trillion, one hundred twelve billion, one hundred eleven million, one hundred twenty thousand, one hundred twenty-one".