2112210121212 has 36 divisors (see below), whose sum is σ = 5620208219080. Its totient is φ = 667013722272.

The previous prime is 2112210121171. The next prime is 2112210121237. The reversal of 2112210121212 is 2121210122112.

2112210121212 is a `hidden beast` number, since 211 + 221 + 0 + 1 + 21 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×2112210121212² (a number of 25 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1544012563 + ... + 1544013930.

Almost surely, 2^{2112210121212} is an apocalyptic number.

It is an amenable number.

2112210121212 is an abundant number, since it is smaller than the sum of its proper divisors (3507998097868).

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

2112210121212 is a wasteful number, since it uses less digits than its factorization.

2112210121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3088026522 (or 3088026517 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2112210121212 its reverse (2121210122112), we get a palindrome (4233420243324).

The spelling of 2112210121212 in words is "two trillion, one hundred twelve billion, two hundred ten million, one hundred twenty-one thousand, two hundred twelve".