22235381 has 4 divisors (see below), whose sum is σ = 25411872. Its totient is φ = 19058892.

The previous prime is 22235359. The next prime is 22235387. The reversal of 22235381 is 18353222.

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 22235381 - 2¹⁰ = 22234357 is a prime.

It is a super-2 number, since 2×22235381² = 988824336430322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22235381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22235387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1588235 + ... + 1588248.

It is an arithmetic number, because the mean of its divisors is an integer number (6352968).

Almost surely, 2^22235381 is an apocalyptic number.

It is an amenable number.

22235381 is a deficient number, since it is larger than the sum of its proper divisors (3176491).

22235381 is an equidigital number, since it uses as much as digits as its factorization.

22235381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3176490.

The product of its digits is 2880, while the sum is 26.

The square root of 22235381 is about 4715.4407005072. The cubic root of 22235381 is about 281.1997035327.

The spelling of 22235381 in words is "twenty-two million, two hundred thirty-five thousand, three hundred eighty-one".