2101022020001 has 4 divisors (see below), whose sum is σ = 2168796923904. Its totient is φ = 2033247116100.

The previous prime is 2101022019923. The next prime is 2101022020043. The reversal of 2101022020001 is 1000202201012.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2101022020001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2101022020051) 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, 33887451905 + ... + 33887451966.

It is an arithmetic number, because the mean of its divisors is an integer number (542199230976).

Almost surely, 2^{2101022020001} is an apocalyptic number.

It is an amenable number.

2101022020001 is a deficient number, since it is larger than the sum of its proper divisors (67774903903).

2101022020001 is an equidigital number, since it uses as much as digits as its factorization.

2101022020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67774903902.

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

Adding to 2101022020001 its reverse (1000202201012), we get a palindrome (3101224221013).

The spelling of 2101022020001 in words is "two trillion, one hundred one billion, twenty-two million, twenty thousand, one".