20112120211212 has 48 divisors (see below), whose sum is σ = 52856815187680. Its totient is φ = 6612203902464.

The previous prime is 20112120211193. The next prime is 20112120211237. The reversal of 20112120211212 is 21211202121102.

20112120211212 is a `hidden beast` number, since 20 + 11 + 212 + 0 + 211 + 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 15 ways as a sum of consecutive naturals, for example, 1275494413 + ... + 1275510180.

Almost surely, 2^{20112120211212} is an apocalyptic number.

It is an amenable number.

20112120211212 is an abundant number, since it is smaller than the sum of its proper divisors (32744694976468).

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

20112120211212 is a wasteful number, since it uses less digits than its factorization.

20112120211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551004679 (or 2551004671 counting only the distinct ones).

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

Adding to 20112120211212 its reverse (21211202121102), we get a palindrome (41323322332314).

The spelling of 20112120211212 in words is "twenty trillion, one hundred twelve billion, one hundred twenty million, two hundred eleven thousand, two hundred twelve".