2122011321021 has 12 divisors (see below), whose sum is σ = 3130342942272. Its totient is φ = 1384574762376.

The previous prime is 2122011320999. The next prime is 2122011321037. The reversal of 2122011321021 is 1201231102212.

It is not a de Polignac number, because 2122011321021 - 2⁷ = 2122011320893 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2122011320985 and 2122011321003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122011321041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2508287191 + ... + 2508288036.

It is an arithmetic number, because the mean of its divisors is an integer number (260861911856).

Almost surely, 2^{2122011321021} is an apocalyptic number.

It is an amenable number.

2122011321021 is a deficient number, since it is larger than the sum of its proper divisors (1008331621251).

2122011321021 is a wasteful number, since it uses less digits than its factorization.

2122011321021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5016575280 (or 5016575277 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2122011321021 its reverse (1201231102212), we get a palindrome (3323242423233).

The spelling of 2122011321021 in words is "two trillion, one hundred twenty-two billion, eleven million, three hundred twenty-one thousand, twenty-one".