312212012101 has 4 divisors (see below), whose sum is σ = 340594922304. Its totient is φ = 283829101900.

The previous prime is 312212012083. The next prime is 312212012111. The reversal of 312212012101 is 101210212213.

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.

It is a cyclic number.

It is not a de Polignac number, because 312212012101 - 2³³ = 303622077509 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 (312212012111) 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, 14191455085 + ... + 14191455106.

It is an arithmetic number, because the mean of its divisors is an integer number (85148730576).

Almost surely, 2^312212012101 is an apocalyptic number.

It is an amenable number.

312212012101 is a deficient number, since it is larger than the sum of its proper divisors (28382910203).

312212012101 is a wasteful number, since it uses less digits than its factorization.

312212012101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28382910202.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 312212012101 its reverse (101210212213), we get a palindrome (413422224314).

The spelling of 312212012101 in words is "three hundred twelve billion, two hundred twelve million, twelve thousand, one hundred one".