201222120120121 has 4 divisors (see below), whose sum is σ = 211812758021200. Its totient is φ = 190631482219044.

The previous prime is 201222120120059. The next prime is 201222120120137. The reversal of 201222120120121 is 121021021222102.

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 201222120120121 - 2³³ = 201213530185529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 10590637901059 = 201222120120121 / (2 + 0 + 1 + 2 + 2 + 2 + 1 + 2 + 0 + 1 + 2 + 0 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201222120120181) 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, 5295318950511 + ... + 5295318950548.

It is an arithmetic number, because the mean of its divisors is an integer number (52953189505300).

Almost surely, 2^{201222120120121} is an apocalyptic number.

It is an amenable number.

201222120120121 is a deficient number, since it is larger than the sum of its proper divisors (10590637901079).

201222120120121 is a wasteful number, since it uses less digits than its factorization.

201222120120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10590637901078.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 201222120120121 its reverse (121021021222102), we get a palindrome (322243141342223).

The spelling of 201222120120121 in words is "two hundred one trillion, two hundred twenty-two billion, one hundred twenty million, one hundred twenty thousand, one hundred twenty-one".