20212021000012 has 24 divisors (see below), whose sum is σ = 37279979992640. Its totient is φ = 9561949851600.

The previous prime is 20212020999887. The next prime is 20212021000019. The reversal of 20212021000012 is 21000012021202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20212020999956 and 20212021000001.

It is not an unprimeable number, because it can be changed into a prime (20212021000019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168903114 + ... + 169022737.

Almost surely, 2^{20212021000012} is an apocalyptic number.

It is an amenable number.

20212021000012 is a deficient number, since it is larger than the sum of its proper divisors (17067958992628).

20212021000012 is a wasteful number, since it uses less digits than its factorization.

20212021000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337926661 (or 337926659 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20212021000012 its reverse (21000012021202), we get a palindrome (41212033021214).

The spelling of 20212021000012 in words is "twenty trillion, two hundred twelve billion, twenty-one million, twelve", and thus it is an aban number.