102122102012111 has 4 divisors (see below), whose sum is σ = 102278491142952. Its totient is φ = 101965712881272.

The previous prime is 102122102012101. The next prime is 102122102012141. The reversal of 102122102012111 is 111210201221201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102122102012111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102122102012111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102122102012101) 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, 78194564441 + ... + 78194565746.

It is an arithmetic number, because the mean of its divisors is an integer number (25569622785738).

Almost surely, 2^{102122102012111} is an apocalyptic number.

102122102012111 is a deficient number, since it is larger than the sum of its proper divisors (156389130841).

102122102012111 is an equidigital number, since it uses as much as digits as its factorization.

102122102012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156389130840.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 102122102012111 its reverse (111210201221201), we get a palindrome (213332303233312).

The spelling of 102122102012111 in words is "one hundred two trillion, one hundred twenty-two billion, one hundred two million, twelve thousand, one hundred eleven".