222220230121 has 4 divisors (see below), whose sum is σ = 222249682512. Its totient is φ = 222190777732.

The previous prime is 222220230091. The next prime is 222220230139. The reversal of 222220230121 is 121032022222.

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 a de Polignac number, because none of the positive numbers 2^k-222220230121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222220233121) 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, 14714875 + ... + 14729968.

It is an arithmetic number, because the mean of its divisors is an integer number (55562420628).

Almost surely, 2^222220230121 is an apocalyptic number.

It is an amenable number.

222220230121 is a deficient number, since it is larger than the sum of its proper divisors (29452391).

222220230121 is an equidigital number, since it uses as much as digits as its factorization.

222220230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29452390.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 222220230121 its reverse (121032022222), we get a palindrome (343252252343).

The spelling of 222220230121 in words is "two hundred twenty-two billion, two hundred twenty million, two hundred thirty thousand, one hundred twenty-one".