22423332013 has 4 divisors (see below), whose sum is σ = 22427750268. Its totient is φ = 22418913760.

The previous prime is 22423331981. The next prime is 22423332023. The reversal of 22423332013 is 31023332422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31023332422 = 2 ⋅15511666211.

It can be written as a sum of positive squares in 2 ways, for example, as 6222369924 + 16200962089 = 78882^2 + 127283^2 .

It is a cyclic number.

It is not a de Polignac number, because 22423332013 - 2⁵ = 22423331981 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 (22423332023) 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, 2201506 + ... + 2211667.

It is an arithmetic number, because the mean of its divisors is an integer number (5606937567).

Almost surely, 2^22423332013 is an apocalyptic number.

It is an amenable number.

22423332013 is a deficient number, since it is larger than the sum of its proper divisors (4418255).

22423332013 is an equidigital number, since it uses as much as digits as its factorization.

22423332013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4418254.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 22423332013 its reverse (31023332422), we get a palindrome (53446664435).

The spelling of 22423332013 in words is "twenty-two billion, four hundred twenty-three million, three hundred thirty-two thousand, thirteen".