20100020122001 has 4 divisors (see below), whose sum is σ = 20748407867904. Its totient is φ = 19451632376100.

The previous prime is 20100020121983. The next prime is 20100020122019. The reversal of 20100020122001 is 10022102000102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (20100020121983) and next prime (20100020122019).

It is a cyclic number.

It is not a de Polignac number, because 20100020122001 - 2³⁴ = 20082840252817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20100020122201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324193872905 + ... + 324193872966.

It is an arithmetic number, because the mean of its divisors is an integer number (5187101966976).

Almost surely, 2^{20100020122001} is an apocalyptic number.

It is an amenable number.

20100020122001 is a deficient number, since it is larger than the sum of its proper divisors (648387745903).

20100020122001 is an equidigital number, since it uses as much as digits as its factorization.

20100020122001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648387745902.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20100020122001 its reverse (10022102000102), we get a palindrome (30122122122103).

The spelling of 20100020122001 in words is "twenty trillion, one hundred billion, twenty million, one hundred twenty-two thousand, one".