22121000223201 has 32 divisors (see below), whose sum is σ = 36085234060800. Its totient is φ = 13281370831440.

The previous prime is 22121000223173. The next prime is 22121000223209. The reversal of 22121000223201 is 10232200012122.

22121000223201 is a `hidden beast` number, since 221 + 2 + 100 + 0 + 22 + 320 + 1 = 666.

It is not a de Polignac number, because 22121000223201 - 2¹⁸ = 22120999961057 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22121000223209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 348012531 + ... + 348076088.

It is an arithmetic number, because the mean of its divisors is an integer number (1127663564400).

Almost surely, 2^{22121000223201} is an apocalyptic number.

It is an amenable number.

22121000223201 is a deficient number, since it is larger than the sum of its proper divisors (13964233837599).

22121000223201 is a wasteful number, since it uses less digits than its factorization.

22121000223201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696088746 (or 696088740 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 22121000223201 its reverse (10232200012122), we get a palindrome (32353200235323).

The spelling of 22121000223201 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twenty-three thousand, two hundred one".