20200202001021 has 48 divisors (see below), whose sum is σ = 32189219536320. Its totient is φ = 11226982233600.

The previous prime is 20200202001017. The next prime is 20200202001079. The reversal of 20200202001021 is 12010020200202.

It is not a de Polignac number, because 20200202001021 - 2² = 20200202001017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20200202000988 and 20200202001006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200202000021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14571670 + ... + 15897608.

It is an arithmetic number, because the mean of its divisors is an integer number (670608740340).

Almost surely, 2^{20200202001021} is an apocalyptic number.

20200202001021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20200202001021 is a deficient number, since it is larger than the sum of its proper divisors (11989017535299).

20200202001021 is a wasteful number, since it uses less digits than its factorization.

20200202001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328794 (or 1328787 counting only the distinct ones).

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

Adding to 20200202001021 its reverse (12010020200202), we get a palindrome (32210222201223).

The spelling of 20200202001021 in words is "twenty trillion, two hundred billion, two hundred two million, one thousand, twenty-one".