312210121012213 has 4 divisors (see below), whose sum is σ = 312210732959820. Its totient is φ = 312209509064608.

The previous prime is 312210121012151. The next prime is 312210121012241.

It is a happy number.

312210121012213 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 150920070212209 + 161290050800004 = 12284953^2 + 12700002^2 .

It is a cyclic number.

It is not a de Polignac number, because 312210121012213 - 2¹³ = 312210121004021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312210121012513) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 305207878 + ... + 306229111.

It is an arithmetic number, because the mean of its divisors is an integer number (78052683239955).

Almost surely, 2^{312210121012213} is an apocalyptic number.

It is an amenable number.

312210121012213 is a deficient number, since it is larger than the sum of its proper divisors (611947607).

312210121012213 is an equidigital number, since it uses as much as digits as its factorization.

312210121012213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611947606.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 312210121012213 in words is "three hundred twelve trillion, two hundred ten billion, one hundred twenty-one million, twelve thousand, two hundred thirteen".