312120011001 has 32 divisors (see below), whose sum is σ = 437612934528. Its totient is φ = 197627834880.

The previous prime is 312120010991. The next prime is 312120011083. The reversal of 312120011001 is 100110021213.

It is not a de Polignac number, because 312120011001 - 2²² = 312115816697 is a prime.

It is a super-2 number, since 2×312120011001² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (312120011501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8195335 + ... + 8233331.

It is an arithmetic number, because the mean of its divisors is an integer number (13675404204).

Almost surely, 2^312120011001 is an apocalyptic number.

It is an amenable number.

312120011001 is a deficient number, since it is larger than the sum of its proper divisors (125492923527).

312120011001 is a wasteful number, since it uses less digits than its factorization.

312120011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39801.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 312120011001 its reverse (100110021213), we get a palindrome (412230032214).

The spelling of 312120011001 in words is "three hundred twelve billion, one hundred twenty million, eleven thousand, one".