312133422021 has 32 divisors (see below), whose sum is σ = 446543107200. Its totient is φ = 193547692800.

The previous prime is 312133421987. The next prime is 312133422059. The reversal of 312133422021 is 120224331213.

It is not a de Polignac number, because 312133422021 - 2¹⁰ = 312133420997 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 312133421982 and 312133422000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312133422121) 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 31 ways as a sum of consecutive naturals, for example, 154911 + ... + 805148.

It is an arithmetic number, because the mean of its divisors is an integer number (13954472100).

Almost surely, 2^312133422021 is an apocalyptic number.

It is an amenable number.

312133422021 is a deficient number, since it is larger than the sum of its proper divisors (134409685179).

312133422021 is a wasteful number, since it uses less digits than its factorization.

312133422021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 960229.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 312133422021 its reverse (120224331213), we get a palindrome (432357753234).

The spelling of 312133422021 in words is "three hundred twelve billion, one hundred thirty-three million, four hundred twenty-two thousand, twenty-one".