20002021000101 has 24 divisors (see below), whose sum is σ = 33019342987904. Its totient is φ = 11429679998880.

The previous prime is 20002021000051. The next prime is 20002021000147. The reversal of 20002021000101 is 10100012020002.

It is not a de Polignac number, because 20002021000101 - 2⁶ = 20002021000037 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002021000301) 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, 20525931 + ... + 21478311.

Almost surely, 2^{20002021000101} is an apocalyptic number.

20002021000101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20002021000101 is a deficient number, since it is larger than the sum of its proper divisors (13017321987803).

20002021000101 is a wasteful number, since it uses less digits than its factorization.

20002021000101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285761 (or 1285758 counting only the distinct ones).

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

Adding to 20002021000101 its reverse (10100012020002), we get a palindrome (30102033020103).

The spelling of 20002021000101 in words is "twenty trillion, two billion, twenty-one million, one hundred one", and thus it is an aban number.