2120122211021 has 16 divisors (see below), whose sum is σ = 2203153439040. Its totient is φ = 2037754709760.

The previous prime is 2120122210967. The next prime is 2120122211023. The reversal of 2120122211021 is 1201122210212.

It is a cyclic number.

It is not a de Polignac number, because 2120122211021 - 2⁶ = 2120122210957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120122211023) 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, 82254866 + ... + 82280636.

It is an arithmetic number, because the mean of its divisors is an integer number (137697089940).

Almost surely, 2^{2120122211021} is an apocalyptic number.

It is an amenable number.

2120122211021 is a deficient number, since it is larger than the sum of its proper divisors (83031228019).

2120122211021 is a wasteful number, since it uses less digits than its factorization.

2120122211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38524.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2120122211021 its reverse (1201122210212), we get a palindrome (3321244421233).

The spelling of 2120122211021 in words is "two trillion, one hundred twenty billion, one hundred twenty-two million, two hundred eleven thousand, twenty-one".