312212234001402 has 256 divisors, whose sum is σ = 822087047577600. Its totient is φ = 85947579325440.

The previous prime is 312212234001397. The next prime is 312212234001511. The reversal of 312212234001402 is 204100432212213.

312212234001402 is a `hidden beast` number, since 3 + 1 + 2 + 21 + 2 + 234 + 0 + 0 + 1 + 402 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 21220153998 + ... + 21220168710.

It is an arithmetic number, because the mean of its divisors is an integer number (3211277529600).

Almost surely, 2^{312212234001402} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 312212234001402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (411043523788800).

312212234001402 is an abundant number, since it is smaller than the sum of its proper divisors (509874813576198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

312212234001402 is a wasteful number, since it uses less digits than its factorization.

312212234001402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22578 (or 22572 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 312212234001402 its reverse (204100432212213), we get a palindrome (516312666213615).

The spelling of 312212234001402 in words is "three hundred twelve trillion, two hundred twelve billion, two hundred thirty-four million, one thousand, four hundred two".