312201111210121 has 16 divisors (see below), whose sum is σ = 362128352670720. Its totient is φ = 263605677722640.

The previous prime is 312201111210097. The next prime is 312201111210161. The reversal of 312201111210121 is 121012111102213.

It is a cyclic number.

It is not a de Polignac number, because 312201111210121 - 2⁷ = 312201111209993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312201111210161) 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, 107102970 + ... + 109979308.

It is an arithmetic number, because the mean of its divisors is an integer number (22633022041920).

Almost surely, 2^{312201111210121} is an apocalyptic number.

It is an amenable number.

312201111210121 is a deficient number, since it is larger than the sum of its proper divisors (49927241460599).

312201111210121 is a wasteful number, since it uses less digits than its factorization.

312201111210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3107844.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 312201111210121 its reverse (121012111102213), we get a palindrome (433213222312334).

The spelling of 312201111210121 in words is "three hundred twelve trillion, two hundred one billion, one hundred eleven million, two hundred ten thousand, one hundred twenty-one".