222210000121 has 4 divisors (see below), whose sum is σ = 226937872512. Its totient is φ = 217482127732.

The previous prime is 222210000043. The next prime is 222210000149. The reversal of 222210000121 is 121000012222.

It is a happy number.

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 222210000121 - 2²⁷ = 222075782393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222210000421) 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, 2363936125 + ... + 2363936218.

It is an arithmetic number, because the mean of its divisors is an integer number (56734468128).

Almost surely, 2^222210000121 is an apocalyptic number.

It is an amenable number.

222210000121 is a deficient number, since it is larger than the sum of its proper divisors (4727872391).

222210000121 is an equidigital number, since it uses as much as digits as its factorization.

222210000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4727872390.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 222210000121 its reverse (121000012222), we get a palindrome (343210012343).

The spelling of 222210000121 in words is "two hundred twenty-two billion, two hundred ten million, one hundred twenty-one", and thus it is an aban number.