102212122111209 has 64 divisors (see below), whose sum is σ = 174801336422400. Its totient is φ = 58418848857600.

The previous prime is 102212122111189. The next prime is 102212122111219. The reversal of 102212122111209 is 902111221212201.

102212122111209 is a `hidden beast` number, since 1 + 0 + 221 + 2 + 1 + 221 + 11 + 209 = 666.

It is not a de Polignac number, because 102212122111209 - 2⁸ = 102212122110953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (102212122111219) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 104888104 + ... + 105858105.

It is an arithmetic number, because the mean of its divisors is an integer number (2731270881600).

Almost surely, 2^{102212122111209} is an apocalyptic number.

It is an amenable number.

102212122111209 is a deficient number, since it is larger than the sum of its proper divisors (72589214311191).

102212122111209 is a wasteful number, since it uses less digits than its factorization.

102212122111209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210746323 (or 210746317 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The spelling of 102212122111209 in words is "one hundred two trillion, two hundred twelve billion, one hundred twenty-two million, one hundred eleven thousand, two hundred nine".