20202002111021 has 16 divisors (see below), whose sum is σ = 20990011084800. Its totient is φ = 19420183641600.

The previous prime is 20202002111017. The next prime is 20202002111041. The reversal of 20202002111021 is 12011120020202.

It is a cyclic number.

It is not a de Polignac number, because 20202002111021 - 2² = 20202002111017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20202002110987 and 20202002111005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202002111041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10686845 + ... + 12434333.

It is an arithmetic number, because the mean of its divisors is an integer number (1311875692800).

Almost surely, 2^{20202002111021} is an apocalyptic number.

It is an amenable number.

20202002111021 is a deficient number, since it is larger than the sum of its proper divisors (788008973779).

20202002111021 is a wasteful number, since it uses less digits than its factorization.

20202002111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749260.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20202002111021 its reverse (12011120020202), we get a palindrome (32213122131223).

The spelling of 20202002111021 in words is "twenty trillion, two hundred two billion, two million, one hundred eleven thousand, twenty-one".