312100202121 has 32 divisors (see below), whose sum is σ = 422575401600. Its totient is φ = 204873676800.

The previous prime is 312100202107. The next prime is 312100202137. The reversal of 312100202121 is 121202001213.

It is not a de Polignac number, because 312100202121 - 2¹⁰ = 312100201097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312100202121.

It is not an unprimeable number, because it can be changed into a prime (312100202321) 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, 69153561 + ... + 69158073.

It is an arithmetic number, because the mean of its divisors is an integer number (13205481300).

Almost surely, 2^312100202121 is an apocalyptic number.

It is an amenable number.

312100202121 is a deficient number, since it is larger than the sum of its proper divisors (110475199479).

312100202121 is a wasteful number, since it uses less digits than its factorization.

312100202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5977.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 312100202121 its reverse (121202001213), we get a palindrome (433302203334).

The spelling of 312100202121 in words is "three hundred twelve billion, one hundred million, two hundred two thousand, one hundred twenty-one".