312233322121 has 16 divisors (see below), whose sum is σ = 372438476928. Its totient is φ = 256174588800.

The previous prime is 312233322109. The next prime is 312233322139. The reversal of 312233322121 is 121223332213.

It is a cyclic number.

It is not a de Polignac number, because 312233322121 - 2⁷ = 312233321993 is a prime.

It is a super-2 number, since 2×312233322121² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (312233322101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10248195 + ... + 10278616.

It is an arithmetic number, because the mean of its divisors is an integer number (23277404808).

Almost surely, 2^312233322121 is an apocalyptic number.

It is an amenable number.

312233322121 is a deficient number, since it is larger than the sum of its proper divisors (60205154807).

312233322121 is a wasteful number, since it uses less digits than its factorization.

312233322121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20526912.

The product of its digits is 2592, while the sum is 25.

Adding to 312233322121 its reverse (121223332213), we get a palindrome (433456654334).

It can be divided in two parts, 31223332212 and 1, that added together give a palindrome (31223332213).

The spelling of 312233322121 in words is "three hundred twelve billion, two hundred thirty-three million, three hundred twenty-two thousand, one hundred twenty-one".