312001220233101 has 32 divisors (see below), whose sum is σ = 475941357158400. Its totient is φ = 178094855431296.

The previous prime is 312001220233093. The next prime is 312001220233103. The reversal of 312001220233101 is 101332022100213.

It is not a de Polignac number, because 312001220233101 - 2³ = 312001220233093 is a prime.

It is a super-2 number, since 2×312001220233101² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312001220233103) 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, 181699780 + ... + 183408866.

It is an arithmetic number, because the mean of its divisors is an integer number (14873167411200).

Almost surely, 2^{312001220233101} is an apocalyptic number.

It is an amenable number.

312001220233101 is a deficient number, since it is larger than the sum of its proper divisors (163940136925299).

312001220233101 is a wasteful number, since it uses less digits than its factorization.

312001220233101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718433.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 312001220233101 its reverse (101332022100213), we get a palindrome (413333242333314).

The spelling of 312001220233101 in words is "three hundred twelve trillion, one billion, two hundred twenty million, two hundred thirty-three thousand, one hundred one".