312212042304421 has 16 divisors (see below), whose sum is σ = 356902115341824. Its totient is φ = 267544063876464.

The previous prime is 312212042304313. The next prime is 312212042304457. The reversal of 312212042304421 is 124403240212213.

It is a cyclic number.

It is not a de Polignac number, because 312212042304421 - 2¹⁵ = 312212042271653 is a prime.

It is a super-2 number, since 2×312212042304421² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312212042301421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 606277570 + ... + 606792316.

It is an arithmetic number, because the mean of its divisors is an integer number (22306382208864).

Almost surely, 2^{312212042304421} is an apocalyptic number.

It is an amenable number.

312212042304421 is a deficient number, since it is larger than the sum of its proper divisors (44690073037403).

312212042304421 is a wasteful number, since it uses less digits than its factorization.

312212042304421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536040.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 312212042304421 its reverse (124403240212213), we get a palindrome (436615282516634).

The spelling of 312212042304421 in words is "three hundred twelve trillion, two hundred twelve billion, forty-two million, three hundred four thousand, four hundred twenty-one".