2021312212012 has 12 divisors (see below), whose sum is σ = 3540802122760. Its totient is φ = 1009654462656.

The previous prime is 2021312211983. The next prime is 2021312212027. The reversal of 2021312212012 is 2102122131202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250406298 + ... + 250414369.

Almost surely, 2^{2021312212012} is an apocalyptic number.

It is an amenable number.

2021312212012 is a deficient number, since it is larger than the sum of its proper divisors (1519489910748).

2021312212012 is a wasteful number, since it uses less digits than its factorization.

2021312212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500821680 (or 500821678 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2021312212012 its reverse (2102122131202), we get a palindrome (4123434343214).

The spelling of 2021312212012 in words is "two trillion, twenty-one billion, three hundred twelve million, two hundred twelve thousand, twelve".