212100021022122 has 192 divisors, whose sum is σ = 484702161076224. Its totient is φ = 66956892468480.

The previous prime is 212100021022111. The next prime is 212100021022177. The reversal of 212100021022122 is 221220120001212.

It is a happy number.

212100021022122 is a `hidden beast` number, since 2 + 1 + 210 + 0 + 0 + 210 + 221 + 22 = 666.

212100021022122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212100021022122² (a number of 29 digits) contains 22 as substring.

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 = 212100021022095 and 212100021022104.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 25668641763 + ... + 25668650025.

It is an arithmetic number, because the mean of its divisors is an integer number (2524490422272).

Almost surely, 2^{212100021022122} is an apocalyptic number.

212100021022122 is an abundant number, since it is smaller than the sum of its proper divisors (272602140054102).

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

212100021022122 is a wasteful number, since it uses less digits than its factorization.

212100021022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14313 (or 14310 counting only the distinct ones).

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

Adding to 212100021022122 its reverse (221220120001212), we get a palindrome (433320141023334).

The spelling of 212100021022122 in words is "two hundred twelve trillion, one hundred billion, twenty-one million, twenty-two thousand, one hundred twenty-two".