222122323121 has 4 divisors (see below), whose sum is σ = 222170085744. Its totient is φ = 222074560500.

The previous prime is 222122323109. The next prime is 222122323133. The reversal of 222122323121 is 121323221222.

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 an interprime number because it is at equal distance from previous prime (222122323109) and next prime (222122323133).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222122323121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222122323321) 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, 23874335 + ... + 23883636.

It is an arithmetic number, because the mean of its divisors is an integer number (55542521436).

Almost surely, 2^222122323121 is an apocalyptic number.

It is an amenable number.

222122323121 is a deficient number, since it is larger than the sum of its proper divisors (47762623).

222122323121 is an equidigital number, since it uses as much as digits as its factorization.

222122323121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47762622.

The product of its digits is 1152, while the sum is 23.

Adding to 222122323121 its reverse (121323221222), we get a palindrome (343445544343).

The spelling of 222122323121 in words is "two hundred twenty-two billion, one hundred twenty-two million, three hundred twenty-three thousand, one hundred twenty-one".