312202213310021 has 4 divisors (see below), whose sum is σ = 313508498721600. Its totient is φ = 310895927898444.

The previous prime is 312202213309997. The next prime is 312202213310041. The reversal of 312202213310021 is 120013312202213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312202213310021 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 (312202213310041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653142705431 + ... + 653142705908.

It is an arithmetic number, because the mean of its divisors is an integer number (78377124680400).

Almost surely, 2^{312202213310021} is an apocalyptic number.

It is an amenable number.

312202213310021 is a deficient number, since it is larger than the sum of its proper divisors (1306285411579).

312202213310021 is a wasteful number, since it uses less digits than its factorization.

312202213310021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306285411578.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 312202213310021 its reverse (120013312202213), we get a palindrome (432215525512234).

The spelling of 312202213310021 in words is "three hundred twelve trillion, two hundred two billion, two hundred thirteen million, three hundred ten thousand, twenty-one".