2021122211001 has 16 divisors (see below), whose sum is σ = 2707344832896. Its totient is φ = 1341165792896.

The previous prime is 2021122210981. The next prime is 2021122211023. The reversal of 2021122211001 is 1001122211202.

It is a cyclic number.

It is not a de Polignac number, because 2021122211001 - 2⁶ = 2021122210937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021122211081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132330 + ... + 2014883.

It is an arithmetic number, because the mean of its divisors is an integer number (169209052056).

Almost surely, 2^{2021122211001} is an apocalyptic number.

It is an amenable number.

2021122211001 is a deficient number, since it is larger than the sum of its proper divisors (686222621895).

2021122211001 is a wasteful number, since it uses less digits than its factorization.

2021122211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148672.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2021122211001 its reverse (1001122211202), we get a palindrome (3022244422203).

The spelling of 2021122211001 in words is "two trillion, twenty-one billion, one hundred twenty-two million, two hundred eleven thousand, one".