312122101 has 8 divisors (see below), whose sum is σ = 328799520. Its totient is φ = 295469712.

The previous prime is 312122093. The next prime is 312122117. The reversal of 312122101 is 101221213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312122101 - 2³ = 312122093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312122201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22866 + ... + 33868.

It is an arithmetic number, because the mean of its divisors is an integer number (41099940).

Almost surely, 2^312122101 is an apocalyptic number.

It is an amenable number.

312122101 is a deficient number, since it is larger than the sum of its proper divisors (16677419).

312122101 is a wasteful number, since it uses less digits than its factorization.

312122101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12515.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 312122101 is about 17666.9776985199. The cubic root of 312122101 is about 678.3307536252.

Adding to 312122101 its reverse (101221213), we get a palindrome (413343314).

The spelling of 312122101 in words is "three hundred twelve million, one hundred twenty-two thousand, one hundred one".