22221042431 has 16 divisors (see below), whose sum is σ = 28304559360. Its totient is φ = 16982732160.

The previous prime is 22221042427. The next prime is 22221042443. The reversal of 22221042431 is 13424012222.

It is a cyclic number.

It is not a de Polignac number, because 22221042431 - 2² = 22221042427 is a prime.

It is a super-2 number, since 2×22221042431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22221042397 and 22221042406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221042401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4911725 + ... + 4916246.

It is an arithmetic number, because the mean of its divisors is an integer number (1769034960).

Almost surely, 2^22221042431 is an apocalyptic number.

22221042431 is a deficient number, since it is larger than the sum of its proper divisors (6083516929).

22221042431 is a wasteful number, since it uses less digits than its factorization.

22221042431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9828014.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 22221042431 its reverse (13424012222), we get a palindrome (35645054653).

The spelling of 22221042431 in words is "twenty-two billion, two hundred twenty-one million, forty-two thousand, four hundred thirty-one".