20020012100001 has 24 divisors (see below), whose sum is σ = 28951180643424. Its totient is φ = 13331268878400.

The previous prime is 20020012099993. The next prime is 20020012100003. The reversal of 20020012100001 is 10000121002002.

It is not a de Polignac number, because 20020012100001 - 2³ = 20020012099993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20020012100003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90668205 + ... + 90888741.

It is an arithmetic number, because the mean of its divisors is an integer number (1206299193476).

Almost surely, 2^{20020012100001} is an apocalyptic number.

It is an amenable number.

20020012100001 is a deficient number, since it is larger than the sum of its proper divisors (8931168543423).

20020012100001 is a wasteful number, since it uses less digits than its factorization.

20020012100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232141 (or 232138 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20020012100001 its reverse (10000121002002), we get a palindrome (30020133102003).

The spelling of 20020012100001 in words is "twenty trillion, twenty billion, twelve million, one hundred thousand, one".