312120203101 has 16 divisors (see below), whose sum is σ = 362780133760. Its totient is φ = 262983516480.

The previous prime is 312120203089. The next prime is 312120203117. The reversal of 312120203101 is 101302021213.

It is a cyclic number.

It is not a de Polignac number, because 312120203101 - 2²⁷ = 311985985373 is a prime.

It is a super-3 number, since 3×312120203101³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312120200101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 470095 + ... + 919363.

It is an arithmetic number, because the mean of its divisors is an integer number (22673758360).

Almost surely, 2^312120203101 is an apocalyptic number.

It is an amenable number.

312120203101 is a deficient number, since it is larger than the sum of its proper divisors (50659930659).

312120203101 is a wasteful number, since it uses less digits than its factorization.

312120203101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450964.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 312120203101 its reverse (101302021213), we get a palindrome (413422224314).

The spelling of 312120203101 in words is "three hundred twelve billion, one hundred twenty million, two hundred three thousand, one hundred one".