312142212033021 has 12 divisors (see below), whose sum is σ = 451614871673472. Its totient is φ = 207751982963976.

The previous prime is 312142212033017. The next prime is 312142212033059. The reversal of 312142212033021 is 120330212241213.

312142212033021 is a `hidden beast` number, since 3 + 1 + 2 + 1 + 422 + 1 + 203 + 30 + 2 + 1 = 666.

It is not a de Polignac number, because 312142212033021 - 2² = 312142212033017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312142212034021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28568749071 + ... + 28568759996.

It is an arithmetic number, because the mean of its divisors is an integer number (37634572639456).

Almost surely, 2^{312142212033021} is an apocalyptic number.

It is an amenable number.

312142212033021 is a deficient number, since it is larger than the sum of its proper divisors (139472659640451).

312142212033021 is a wasteful number, since it uses less digits than its factorization.

312142212033021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57137509680 (or 57137509677 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 312142212033021 its reverse (120330212241213), we get a palindrome (432472424274234).

The spelling of 312142212033021 in words is "three hundred twelve trillion, one hundred forty-two billion, two hundred twelve million, thirty-three thousand, twenty-one".