312212123011 has 8 divisors (see below), whose sum is σ = 316883390480. Its totient is φ = 307541190528.

The previous prime is 312212122991. The next prime is 312212123023. The reversal of 312212123011 is 110321212213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312212123011 - 2⁷ = 312212122883 is a prime.

It is a super-2 number, since 2×312212123011² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 312212123011.

It is not an unprimeable number, because it can be changed into a prime (312212123081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2296135 + ... + 2428303.

It is an arithmetic number, because the mean of its divisors is an integer number (39610423810).

Almost surely, 2^312212123011 is an apocalyptic number.

312212123011 is a deficient number, since it is larger than the sum of its proper divisors (4671267469).

312212123011 is a wasteful number, since it uses less digits than its factorization.

312212123011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167493.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 312212123011 its reverse (110321212213), we get a palindrome (422533335224).

The spelling of 312212123011 in words is "three hundred twelve billion, two hundred twelve million, one hundred twenty-three thousand, eleven".