22220032121 has 16 divisors (see below), whose sum is σ = 26892247680. Its totient is φ = 17922643200.

The previous prime is 22220032111. The next prime is 22220032171. The reversal of 22220032121 is 12123002222.

It is not a de Polignac number, because 22220032121 - 2¹⁴ = 22220015737 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22220032121.

It is not an unprimeable number, because it can be changed into a prime (22220032111) 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 15 ways as a sum of consecutive naturals, for example, 1168790 + ... + 1187648.

It is an arithmetic number, because the mean of its divisors is an integer number (1680765480).

Almost surely, 2^22220032121 is an apocalyptic number.

It is an amenable number.

22220032121 is a deficient number, since it is larger than the sum of its proper divisors (4672215559).

22220032121 is a wasteful number, since it uses less digits than its factorization.

22220032121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28784.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 22220032121 its reverse (12123002222), we get a palindrome (34343034343).

The spelling of 22220032121 in words is "twenty-two billion, two hundred twenty million, thirty-two thousand, one hundred twenty-one".