21110313213 has 24 divisors (see below), whose sum is σ = 33297732000. Its totient is φ = 12781438560.

The previous prime is 21110313197. The next prime is 21110313277. The reversal of 21110313213 is 31231301112.

It is not a de Polignac number, because 21110313213 - 2⁴ = 21110313197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110313013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4963 + ... + 205536.

It is an arithmetic number, because the mean of its divisors is an integer number (1387405500).

Almost surely, 2^21110313213 is an apocalyptic number.

It is an amenable number.

21110313213 is a deficient number, since it is larger than the sum of its proper divisors (12187418787).

21110313213 is a wasteful number, since it uses less digits than its factorization.

21110313213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211529 (or 211526 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 21110313213 its reverse (31231301112), we get a palindrome (52341614325).

The spelling of 21110313213 in words is "twenty-one billion, one hundred ten million, three hundred thirteen thousand, two hundred thirteen".