312033321121 has 4 divisors (see below), whose sum is σ = 312084928512. Its totient is φ = 311981713732.

The previous prime is 312033321091. The next prime is 312033321137. The reversal of 312033321121 is 121123330213.

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, and also an emirpimes, since its reverse is a distinct semiprime: 121123330213 = 3119 ⋅38834027.

It is a cyclic number.

It is not a de Polignac number, because 312033321121 - 2⁷ = 312033320993 is a prime.

It is a super-2 number, since 2×312033321121² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312033321092 and 312033321101.

It is not an unprimeable number, because it can be changed into a prime (312037321121) 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, 25794625 + ... + 25806718.

It is an arithmetic number, because the mean of its divisors is an integer number (78021232128).

Almost surely, 2^312033321121 is an apocalyptic number.

It is an amenable number.

312033321121 is a deficient number, since it is larger than the sum of its proper divisors (51607391).

312033321121 is an equidigital number, since it uses as much as digits as its factorization.

312033321121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51607390.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 312033321121 its reverse (121123330213), we get a palindrome (433156651334).

The spelling of 312033321121 in words is "three hundred twelve billion, thirty-three million, three hundred twenty-one thousand, one hundred twenty-one".