22332221430421 has 36 divisors (see below), whose sum is σ = 27768974725260. Its totient is φ = 17885648995200.

The previous prime is 22332221430383. The next prime is 22332221430451. The reversal of 22332221430421 is 12403412223322.

It can be written as a sum of positive squares in 2 ways, for example, as 18539173049796 + 3793048380625 = 4305714^2 + 1947575^2 .

It is not a de Polignac number, because 22332221430421 - 2³¹ = 22330073946773 is a prime.

It is a super-2 number, since 2×22332221430421² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22332221430451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6811240 + ... + 9542401.

It is an arithmetic number, because the mean of its divisors is an integer number (771360409035).

Almost surely, 2^{22332221430421} is an apocalyptic number.

It is an amenable number.

22332221430421 is a deficient number, since it is larger than the sum of its proper divisors (5436753294839).

22332221430421 is a wasteful number, since it uses less digits than its factorization.

22332221430421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16353746 (or 16353708 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 22332221430421 its reverse (12403412223322), we get a palindrome (34735633653743).

The spelling of 22332221430421 in words is "twenty-two trillion, three hundred thirty-two billion, two hundred twenty-one million, four hundred thirty thousand, four hundred twenty-one".