22200120121 has 4 divisors (see below), whose sum is σ = 22292237044. Its totient is φ = 22108003200.

The previous prime is 22200120101. The next prime is 22200120133. The reversal of 22200120121 is 12102100222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12072515625 + 10127604496 = 109875^2 + 100636^2 .

It is a cyclic number.

It is not a de Polignac number, because 22200120121 - 2¹⁹ = 22199595833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22200120101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46058100 + ... + 46058581.

It is an arithmetic number, because the mean of its divisors is an integer number (5573059261).

Almost surely, 2^22200120121 is an apocalyptic number.

It is an amenable number.

22200120121 is a deficient number, since it is larger than the sum of its proper divisors (92116923).

22200120121 is an equidigital number, since it uses as much as digits as its factorization.

22200120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92116922.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22200120121 its reverse (12102100222), we get a palindrome (34302220343).

The spelling of 22200120121 in words is "twenty-two billion, two hundred million, one hundred twenty thousand, one hundred twenty-one".