21332220012013 has 4 divisors (see below), whose sum is σ = 21336483902688. Its totient is φ = 21327956121340.

The previous prime is 21332220011969. The next prime is 21332220012031. The reversal of 21332220012013 is 31021002223312.

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-21332220012013 is a prime.

It is a super-2 number, since 2×21332220012013² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332220012413) 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, 2131937833 + ... + 2131947838.

It is an arithmetic number, because the mean of its divisors is an integer number (5334120975672).

Almost surely, 2^{21332220012013} is an apocalyptic number.

It is an amenable number.

21332220012013 is a deficient number, since it is larger than the sum of its proper divisors (4263890675).

21332220012013 is an equidigital number, since it uses as much as digits as its factorization.

21332220012013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4263890674.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21332220012013 its reverse (31021002223312), we get a palindrome (52353222235325).

The spelling of 21332220012013 in words is "twenty-one trillion, three hundred thirty-two billion, two hundred twenty million, twelve thousand, thirteen".