312012012221002 has 16 divisors (see below), whose sum is σ = 501821255698560. Its totient is φ = 144970584977088.

The previous prime is 312012012220999. The next prime is 312012012221057. The reversal of 312012012221002 is 200122210210213.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58081161168 + ... + 58081166539.

It is an arithmetic number, because the mean of its divisors is an integer number (31363828481160).

Almost surely, 2^{312012012221002} is an apocalyptic number.

312012012221002 is a deficient number, since it is larger than the sum of its proper divisors (189809243477558).

312012012221002 is a wasteful number, since it uses less digits than its factorization.

312012012221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116162327805.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 312012012221002 its reverse (200122210210213), we get a palindrome (512134222431215).

The spelling of 312012012221002 in words is "three hundred twelve trillion, twelve billion, twelve million, two hundred twenty-one thousand, two".