2101120222001 has 4 divisors (see below), whose sum is σ = 2102383675392. Its totient is φ = 2099856768612.

The previous prime is 2101120221997. The next prime is 2101120222039. The reversal of 2101120222001 is 1002220211012.

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 not a de Polignac number, because 2101120222001 - 2² = 2101120221997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101120222051) 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, 631724201 + ... + 631727526.

It is an arithmetic number, because the mean of its divisors is an integer number (525595918848).

Almost surely, 2^{2101120222001} is an apocalyptic number.

It is an amenable number.

2101120222001 is a deficient number, since it is larger than the sum of its proper divisors (1263453391).

2101120222001 is a wasteful number, since it uses less digits than its factorization.

2101120222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263453390.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2101120222001 its reverse (1002220211012), we get a palindrome (3103340433013).

The spelling of 2101120222001 in words is "two trillion, one hundred one billion, one hundred twenty million, two hundred twenty-two thousand, one".