22022121202121 has 16 divisors (see below), whose sum is σ = 22990035600000. Its totient is φ = 21055078057728.

The previous prime is 22022121202049. The next prime is 22022121202127. The reversal of 22022121202121 is 12120212122022.

It is a cyclic number.

It is not a de Polignac number, because 22022121202121 - 2³⁴ = 22004941332937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22022121202093 and 22022121202102.

It is not an unprimeable number, because it can be changed into a prime (22022121202127) 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, 652509755 + ... + 652543503.

It is an arithmetic number, because the mean of its divisors is an integer number (1436877225000).

Almost surely, 2^{22022121202121} is an apocalyptic number.

It is an amenable number.

22022121202121 is a deficient number, since it is larger than the sum of its proper divisors (967914397879).

22022121202121 is a wasteful number, since it uses less digits than its factorization.

22022121202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45808.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22022121202121 its reverse (12120212122022), we get a palindrome (34142333324143).

The spelling of 22022121202121 in words is "twenty-two trillion, twenty-two billion, one hundred twenty-one million, two hundred two thousand, one hundred twenty-one".