2122122111021 has 32 divisors (see below), whose sum is σ = 3631438915200. Its totient is φ = 1210479632640.

The previous prime is 2122122110947. The next prime is 2122122111041. The reversal of 2122122111021 is 1201112212212.

2122122111021 is a `hidden beast` number, since 212 + 212 + 211 + 10 + 21 = 666.

It is not a de Polignac number, because 2122122111021 - 2¹⁵ = 2122122078253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2122122110985 and 2122122111003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122122111041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 210147666 + ... + 210157763.

It is an arithmetic number, because the mean of its divisors is an integer number (113482466100).

Almost surely, 2^{2122122111021} is an apocalyptic number.

It is an amenable number.

2122122111021 is a deficient number, since it is larger than the sum of its proper divisors (1509316804179).

2122122111021 is a wasteful number, since it uses less digits than its factorization.

2122122111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420305466 (or 420305460 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2122122111021 its reverse (1201112212212), we get a palindrome (3323234323233).

The spelling of 2122122111021 in words is "two trillion, one hundred twenty-two billion, one hundred twenty-two million, one hundred eleven thousand, twenty-one".