13222140021 has 12 divisors (see below), whose sum is σ = 19099785120. Its totient is φ = 8814234600.

The previous prime is 13222140017. The next prime is 13222140023. The reversal of 13222140021 is 12004122231.

It is a happy number.

It is not a de Polignac number, because 13222140021 - 2² = 13222140017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13222139976 and 13222140003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13222140023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171096 + ... + 236046.

It is an arithmetic number, because the mean of its divisors is an integer number (1591648760).

Almost surely, 2^13222140021 is an apocalyptic number.

It is an amenable number.

13222140021 is a deficient number, since it is larger than the sum of its proper divisors (5877645099).

13222140021 is a wasteful number, since it uses less digits than its factorization.

13222140021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87576 (or 87573 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 13222140021 its reverse (12004122231), we get a palindrome (25226262252).

The spelling of 13222140021 in words is "thirteen billion, two hundred twenty-two million, one hundred forty thousand, twenty-one".