21310311213322 has 8 divisors (see below), whose sum is σ = 31966594474500. Its totient is φ = 10654779721824.

The previous prime is 21310311213277. The next prime is 21310311213341. The reversal of 21310311213322 is 22331211301312.

It can be written as a sum of positive squares in 2 ways, for example, as 20268913414201 + 1041397799121 = 4502101^2 + 1020489^2 .

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

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, 187871547 + ... + 187984942.

Almost surely, 2^{21310311213322} is an apocalyptic number.

21310311213322 is a deficient number, since it is larger than the sum of its proper divisors (10656283261178).

21310311213322 is a wasteful number, since it uses less digits than its factorization.

21310311213322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375884840.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 21310311213322 its reverse (22331211301312), we get a palindrome (43641522514634).

The spelling of 21310311213322 in words is "twenty-one trillion, three hundred ten billion, three hundred eleven million, two hundred thirteen thousand, three hundred twenty-two".