2021102020012 has 6 divisors (see below), whose sum is σ = 3536928535028. Its totient is φ = 1010551010004.

The previous prime is 2021102020009. The next prime is 2021102020073. The reversal of 2021102020012 is 2100202011202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2021102019974 and 2021102020001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252637752498 + ... + 252637752505.

Almost surely, 2^{2021102020012} is an apocalyptic number.

It is an amenable number.

2021102020012 is a deficient number, since it is larger than the sum of its proper divisors (1515826515016).

2021102020012 is a wasteful number, since it uses less digits than its factorization.

2021102020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505275505007 (or 505275505005 counting only the distinct ones).

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

Adding to 2021102020012 its reverse (2100202011202), we get a palindrome (4121304031214).

The spelling of 2021102020012 in words is "two trillion, twenty-one billion, one hundred two million, twenty thousand, twelve".