22013332421 has 8 divisors (see below), whose sum is σ = 22095537024. Its totient is φ = 21931252560.

The previous prime is 22013332403. The next prime is 22013332423. The reversal of 22013332421 is 12423331022.

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

It is a cyclic number.

It is not a de Polignac number, because 22013332421 - 2²⁶ = 21946223557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22013332423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330176 + ... + 391206.

It is an arithmetic number, because the mean of its divisors is an integer number (2761942128).

Almost surely, 2^22013332421 is an apocalyptic number.

It is an amenable number.

22013332421 is a deficient number, since it is larger than the sum of its proper divisors (82204603).

22013332421 is an equidigital number, since it uses as much as digits as its factorization.

22013332421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62371.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 22013332421 its reverse (12423331022), we get a palindrome (34436663443).

The spelling of 22013332421 in words is "twenty-two billion, thirteen million, three hundred thirty-two thousand, four hundred twenty-one".