2202121122021 has 12 divisors (see below), whose sum is σ = 3225642207840. Its totient is φ = 1447403553960.

The previous prime is 2202121122001. The next prime is 2202121122067. The reversal of 2202121122021 is 1202211212022.

It is a happy number.

2202121122021 is a `hidden beast` number, since 220 + 212 + 11 + 220 + 2 + 1 = 666.

It is not a de Polignac number, because 2202121122021 - 2⁹ = 2202121121509 is a prime.

It is a super-2 number, since 2×2202121122021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2202121121985 and 2202121122003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202121122001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1723098831 + ... + 1723100108.

It is an arithmetic number, because the mean of its divisors is an integer number (268803517320).

Almost surely, 2^{2202121122021} is an apocalyptic number.

It is an amenable number.

2202121122021 is a deficient number, since it is larger than the sum of its proper divisors (1023521085819).

2202121122021 is a wasteful number, since it uses less digits than its factorization.

2202121122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3446199016 (or 3446199013 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2202121122021 its reverse (1202211212022), we get a palindrome (3404332334043).

Subtracting from 2202121122021 its reverse (1202211212022), we obtain a palindrome (999909909999).

The spelling of 2202121122021 in words is "two trillion, two hundred two billion, one hundred twenty-one million, one hundred twenty-two thousand, twenty-one".