21132213113 has 4 divisors (see below), whose sum is σ = 23053323408. Its totient is φ = 19211102820.

The previous prime is 21132213107. The next prime is 21132213119. The reversal of 21132213113 is 31131223112.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (21132213107) and next prime (21132213119).

It is a cyclic number.

It is not a de Polignac number, because 21132213113 - 2¹⁶ = 21132147577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21132213119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 960555131 + ... + 960555152.

It is an arithmetic number, because the mean of its divisors is an integer number (5763330852).

Almost surely, 2^21132213113 is an apocalyptic number.

It is an amenable number.

21132213113 is a deficient number, since it is larger than the sum of its proper divisors (1921110295).

21132213113 is a wasteful number, since it uses less digits than its factorization.

21132213113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921110294.

The product of its digits is 216, while the sum is 20.

Adding to 21132213113 its reverse (31131223112), we get a palindrome (52263436225).

Subtracting 21132213113 from its reverse (31131223112), we obtain a palindrome (9999009999).

The spelling of 21132213113 in words is "twenty-one billion, one hundred thirty-two million, two hundred thirteen thousand, one hundred thirteen".