222120200121 has 4 divisors (see below), whose sum is σ = 296160266832. Its totient is φ = 148080133412.

The previous prime is 222120200117. The next prime is 222120200123. The reversal of 222120200121 is 121002021222.

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 222120200121 - 2² = 222120200117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222120200121.

It is not an unprimeable number, because it can be changed into a prime (222120200123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37020033351 + ... + 37020033356.

It is an arithmetic number, because the mean of its divisors is an integer number (74040066708).

Almost surely, 2^222120200121 is an apocalyptic number.

It is an amenable number.

222120200121 is a deficient number, since it is larger than the sum of its proper divisors (74040066711).

222120200121 is an equidigital number, since it uses as much as digits as its factorization.

222120200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74040066710.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222120200121 its reverse (121002021222), we get a palindrome (343122221343).

The spelling of 222120200121 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred thousand, one hundred twenty-one".