12100122021222 has 24 divisors (see below), whose sum is σ = 26222732711760. Its totient is φ = 4032481443120.

The previous prime is 12100122021209. The next prime is 12100122021223. The reversal of 12100122021222 is 22212022100121.

It is a happy number.

12100122021222 is a `hidden beast` number, since 1 + 210 + 0 + 1 + 220 + 212 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12100122021195 and 12100122021204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100122021223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74296729 + ... + 74459412.

It is an arithmetic number, because the mean of its divisors is an integer number (1092613862990).

Almost surely, 2^{12100122021222} is an apocalyptic number.

12100122021222 is an abundant number, since it is smaller than the sum of its proper divisors (14122610690538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12100122021222 is a wasteful number, since it uses less digits than its factorization.

12100122021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148760668 (or 148760665 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12100122021222 its reverse (22212022100121), we get a palindrome (34312144121343).

The spelling of 12100122021222 in words is "twelve trillion, one hundred billion, one hundred twenty-two million, twenty-one thousand, two hundred twenty-two".