312212123332 has 12 divisors (see below), whose sum is σ = 548315599356. Its totient is φ = 155550523520.

The previous prime is 312212123329. The next prime is 312212123351. The reversal of 312212123332 is 233321212213.

It can be written as a sum of positive squares in 2 ways, for example, as 265445465796 + 46766657536 = 515214^2 + 216256^2 .

It is a junction number, because it is equal to n+sod(n) for n = 312212123297 and 312212123306.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138883273 + ... + 138885520.

It is an arithmetic number, because the mean of its divisors is an integer number (45692966613).

Almost surely, 2^312212123332 is an apocalyptic number.

It is an amenable number.

312212123332 is a deficient number, since it is larger than the sum of its proper divisors (236103476024).

312212123332 is a wasteful number, since it uses less digits than its factorization.

312212123332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277769078 (or 277769076 counting only the distinct ones).

The product of its digits is 2592, while the sum is 25.

Adding to 312212123332 its reverse (233321212213), we get a palindrome (545533335545).

The spelling of 312212123332 in words is "three hundred twelve billion, two hundred twelve million, one hundred twenty-three thousand, three hundred thirty-two".