22200032121 has 16 divisors (see below), whose sum is σ = 31077768000. Its totient is φ = 14076393408.

The previous prime is 22200032083. The next prime is 22200032149. The reversal of 22200032121 is 12123000222.

It is a happy number.

It is not a de Polignac number, because 22200032121 - 2⁷ = 22200031993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22200032121.

It is not an unprimeable number, because it can be changed into a prime (22200032171) 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, 1898446 + ... + 1910103.

It is an arithmetic number, because the mean of its divisors is an integer number (1942360500).

Almost surely, 2^22200032121 is an apocalyptic number.

It is an amenable number.

22200032121 is a deficient number, since it is larger than the sum of its proper divisors (8877735879).

22200032121 is a wasteful number, since it uses less digits than its factorization.

22200032121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3808648.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 22200032121 its reverse (12123000222), we get a palindrome (34323032343).

The spelling of 22200032121 in words is "twenty-two billion, two hundred million, thirty-two thousand, one hundred twenty-one".