2100122122212 has 144 divisors (see below), whose sum is σ = 5377926415680. Its totient is φ = 690963001344.

The previous prime is 2100122122199. The next prime is 2100122122229. The reversal of 2100122122212 is 2122212210012.

It is a happy number.

2100122122212 is a `hidden beast` number, since 210 + 0 + 1 + 221 + 22 + 212 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1668086839 + ... + 1668088097.

It is an arithmetic number, because the mean of its divisors is an integer number (37346711220).

Almost surely, 2^{2100122122212} is an apocalyptic number.

It is an amenable number.

2100122122212 is an abundant number, since it is smaller than the sum of its proper divisors (3277804293468).

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

2100122122212 is a wasteful number, since it uses less digits than its factorization.

2100122122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2762 (or 2757 counting only the distinct ones).

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

Adding to 2100122122212 its reverse (2122212210012), we get a palindrome (4222334332224).

It can be divided in two parts, 210012 and 2122212, that multiplied together give a palindrome (445689986544).

The spelling of 2100122122212 in words is "two trillion, one hundred billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred twelve".