312103022121 has 24 divisors (see below), whose sum is σ = 494815897056. Its totient is φ = 187992887040.

The previous prime is 312103022107. The next prime is 312103022171. The reversal of 312103022121 is 121220301213.

312103022121 is a `hidden beast` number, since 31 + 210 + 302 + 2 + 121 = 666.

It is not a de Polignac number, because 312103022121 - 2⁹ = 312103021609 is a prime.

It is a super-2 number, since 2×312103022121² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312103022094 and 312103022103.

It is not an unprimeable number, because it can be changed into a prime (312103022171) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 9654280 + ... + 9686553.

It is an arithmetic number, because the mean of its divisors is an integer number (20617329044).

Almost surely, 2^312103022121 is an apocalyptic number.

It is an amenable number.

312103022121 is a deficient number, since it is larger than the sum of its proper divisors (182712874935).

312103022121 is a wasteful number, since it uses less digits than its factorization.

312103022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19341013 (or 19341010 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 312103022121 its reverse (121220301213), we get a palindrome (433323323334).

The spelling of 312103022121 in words is "three hundred twelve billion, one hundred three million, twenty-two thousand, one hundred twenty-one".