312232121121 has 8 divisors (see below), whose sum is σ = 417812418304. Its totient is φ = 207403285680.

The previous prime is 312232121107. The next prime is 312232121147. The reversal of 312232121121 is 121121232213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 312232121121 - 2⁹ = 312232120609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312232121161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187864465 + ... + 187866126.

It is an arithmetic number, because the mean of its divisors is an integer number (52226552288).

Almost surely, 2^312232121121 is an apocalyptic number.

It is an amenable number.

312232121121 is a deficient number, since it is larger than the sum of its proper divisors (105580297183).

312232121121 is a wasteful number, since it uses less digits than its factorization.

312232121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375730871.

The product of its digits is 288, while the sum is 21.

Adding to 312232121121 its reverse (121121232213), we get a palindrome (433353353334).

The spelling of 312232121121 in words is "three hundred twelve billion, two hundred thirty-two million, one hundred twenty-one thousand, one hundred twenty-one".