102112100022172 has 24 divisors (see below), whose sum is σ = 180415022732784. Its totient is φ = 50565208818432.

The previous prime is 102112100022151. The next prime is 102112100022173. The reversal of 102112100022172 is 271220001211201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102112100022173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30684343 + ... + 33848974.

It is an arithmetic number, because the mean of its divisors is an integer number (7517292613866).

Almost surely, 2^{102112100022172} is an apocalyptic number.

It is an amenable number.

102112100022172 is a deficient number, since it is larger than the sum of its proper divisors (78302922710612).

102112100022172 is a wasteful number, since it uses less digits than its factorization.

102112100022172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64537125 (or 64537123 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 102112100022172 its reverse (271220001211201), we get a palindrome (373332101233373).

The spelling of 102112100022172 in words is "one hundred two trillion, one hundred twelve billion, one hundred million, twenty-two thousand, one hundred seventy-two".