312121131202 has 8 divisors (see below), whose sum is σ = 492822838800. Its totient is φ = 147846851604.

The previous prime is 312121131173. The next prime is 312121131211. The reversal of 312121131202 is 202131121213.

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

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 312121131202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4106856952 + ... + 4106857027.

It is an arithmetic number, because the mean of its divisors is an integer number (61602854850).

Almost surely, 2^312121131202 is an apocalyptic number.

312121131202 is a deficient number, since it is larger than the sum of its proper divisors (180701707598).

312121131202 is a wasteful number, since it uses less digits than its factorization.

312121131202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8213714000.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 312121131202 its reverse (202131121213), we get a palindrome (514252252415).

The spelling of 312121131202 in words is "three hundred twelve billion, one hundred twenty-one million, one hundred thirty-one thousand, two hundred two".