20202020002001 has 16 divisors (see below), whose sum is σ = 20601742487040. Its totient is φ = 19802990413440.

The previous prime is 20202020001923. The next prime is 20202020002019. The reversal of 20202020002001 is 10020002020202.

It is a cyclic number.

It is not a de Polignac number, because 20202020002001 - 2²⁶ = 20201952893137 is a prime.

It is a super-2 number, since 2×20202020002001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20202020002301) 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, 415492670 + ... + 415541288.

It is an arithmetic number, because the mean of its divisors is an integer number (1287608905440).

Almost surely, 2^{20202020002001} is an apocalyptic number.

It is an amenable number.

20202020002001 is a deficient number, since it is larger than the sum of its proper divisors (399722485039).

20202020002001 is a wasteful number, since it uses less digits than its factorization.

20202020002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55576.

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 20202020002001 its reverse (10020002020202), we get a palindrome (30222022022203).

The spelling of 20202020002001 in words is "twenty trillion, two hundred two billion, twenty million, two thousand, one".