20202002010021 has 64 divisors (see below), whose sum is σ = 31026887958528. Its totient is φ = 11581827099648.

The previous prime is 20202002009963. The next prime is 20202002010079. The reversal of 20202002010021 is 12001020020202.

It is an interprime number because it is at equal distance from previous prime (20202002009963) and next prime (20202002010079).

It is not a de Polignac number, because 20202002010021 - 2¹¹ = 20202002007973 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20202002009979 and 20202002010006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202002010521) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 86644420 + ... + 86877266.

It is an arithmetic number, because the mean of its divisors is an integer number (484795124352).

Almost surely, 2^{20202002010021} is an apocalyptic number.

It is an amenable number.

20202002010021 is a deficient number, since it is larger than the sum of its proper divisors (10824885948507).

20202002010021 is a wasteful number, since it uses less digits than its factorization.

20202002010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234210.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20202002010021 its reverse (12001020020202), we get a palindrome (32203022030223).

The spelling of 20202002010021 in words is "twenty trillion, two hundred two billion, two million, ten thousand, twenty-one".