22102231 has 4 divisors (see below), whose sum is σ = 22150432. Its totient is φ = 22054032.

The previous prime is 22102217. The next prime is 22102237. The reversal of 22102231 is 13220122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22102231 is a prime.

It is a super-2 number, since 2×22102231² = 977017230354722, which 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 (22102237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23406 + ... + 24331.

It is an arithmetic number, because the mean of its divisors is an integer number (5537608).

Almost surely, 2^22102231 is an apocalyptic number.

22102231 is a deficient number, since it is larger than the sum of its proper divisors (48201).

22102231 is an equidigital number, since it uses as much as digits as its factorization.

22102231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48200.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 22102231 is about 4701.3009901516. The cubic root of 22102231 is about 280.6372856694.

Adding to 22102231 its reverse (13220122), we get a palindrome (35322353).

The spelling of 22102231 in words is "twenty-two million, one hundred two thousand, two hundred thirty-one".