20212111201021 has 16 divisors (see below), whose sum is σ = 20466440064000. Its totient is φ = 19959119324928.

The previous prime is 20212111200959. The next prime is 20212111201033. The reversal of 20212111201021 is 12010211121202.

It is a cyclic number.

It is not a de Polignac number, because 20212111201021 - 2⁴³ = 11416018178813 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20212111200986 and 20212111201004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212111201091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465705880 + ... + 465749278.

It is an arithmetic number, because the mean of its divisors is an integer number (1279152504000).

Almost surely, 2^{20212111201021} is an apocalyptic number.

It is an amenable number.

20212111201021 is a deficient number, since it is larger than the sum of its proper divisors (254328862979).

20212111201021 is a wasteful number, since it uses less digits than its factorization.

20212111201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58668.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20212111201021 its reverse (12010211121202), we get a palindrome (32222322322223).

The spelling of 20212111201021 in words is "twenty trillion, two hundred twelve billion, one hundred eleven million, two hundred one thousand, twenty-one".