21320311144210 has 32 divisors (see below), whose sum is σ = 41894748408240. Its totient is φ = 7764277690368.

The previous prime is 21320311144201. The next prime is 21320311144261. The reversal of 21320311144210 is 1244111302312.

It can be written as a sum of positive squares in 8 ways, for example, as 623880399321 + 20696430744889 = 789861^2 + 4549333^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1123294575 + ... + 1123313554.

Almost surely, 2^{21320311144210} is an apocalyptic number.

21320311144210 is a deficient number, since it is larger than the sum of its proper divisors (20574437264030).

21320311144210 is a wasteful number, since it uses less digits than its factorization.

21320311144210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2246608222.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 21320311144210 its reverse (1244111302312), we get a palindrome (22564422446522).

The spelling of 21320311144210 in words is "twenty-one trillion, three hundred twenty billion, three hundred eleven million, one hundred forty-four thousand, two hundred ten".