22215504442331 has 4 divisors (see below), whose sum is σ = 22221908454000. Its totient is φ = 22209100430664.

The previous prime is 22215504442259. The next prime is 22215504442343. The reversal of 22215504442331 is 13324440551222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22215504442331 - 2²² = 22215500248027 is a prime.

It is a super-2 number, since 2×22215504442331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22215504402331) 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, 3202000631 + ... + 3202007568.

It is an arithmetic number, because the mean of its divisors is an integer number (5555477113500).

Almost surely, 2^{22215504442331} is an apocalyptic number.

22215504442331 is a deficient number, since it is larger than the sum of its proper divisors (6404011669).

22215504442331 is an equidigital number, since it uses as much as digits as its factorization.

22215504442331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6404011668.

The product of its (nonzero) digits is 230400, while the sum is 38.

Adding to 22215504442331 its reverse (13324440551222), we get a palindrome (35539944993553).

The spelling of 22215504442331 in words is "twenty-two trillion, two hundred fifteen billion, five hundred four million, four hundred forty-two thousand, three hundred thirty-one".