22200022122121 has 4 divisors (see below), whose sum is σ = 22531365735952. Its totient is φ = 21868678508292.

The previous prime is 22200022122079. The next prime is 22200022122133. The reversal of 22200022122121 is 12122122000222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22200022122121 - 2³⁹ = 21650266308233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22200022122821) 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, 165671806815 + ... + 165671806948.

It is an arithmetic number, because the mean of its divisors is an integer number (5632841433988).

Almost surely, 2^{22200022122121} is an apocalyptic number.

It is an amenable number.

22200022122121 is a deficient number, since it is larger than the sum of its proper divisors (331343613831).

22200022122121 is an equidigital number, since it uses as much as digits as its factorization.

22200022122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331343613830.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 22200022122121 its reverse (12122122000222), we get a palindrome (34322144122343).

The spelling of 22200022122121 in words is "twenty-two trillion, two hundred billion, twenty-two million, one hundred twenty-two thousand, one hundred twenty-one".