13222002421 has 4 divisors (see below), whose sum is σ = 13227581344. Its totient is φ = 13216423500.

The previous prime is 13222002337. The next prime is 13222002427. The reversal of 13222002421 is 12420022231.

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 not a de Polignac number, because 13222002421 - 2¹³ = 13221994229 is a prime.

It is a super-2 number, since 2×13222002421² (a number of 21 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 (13222002427) 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, 2785905 + ... + 2790646.

It is an arithmetic number, because the mean of its divisors is an integer number (3306895336).

Almost surely, 2^13222002421 is an apocalyptic number.

It is an amenable number.

13222002421 is a deficient number, since it is larger than the sum of its proper divisors (5578923).

13222002421 is an equidigital number, since it uses as much as digits as its factorization.

13222002421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5578922.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 13222002421 its reverse (12420022231), we get a palindrome (25642024652).

The spelling of 13222002421 in words is "thirteen billion, two hundred twenty-two million, two thousand, four hundred twenty-one".