22237091 has 2 divisors, whose sum is σ = 22237092. Its totient is φ = 22237090.

The previous prime is 22237073. The next prime is 22237109. The reversal of 22237091 is 19073222.

Together with next prime (22237109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (22237073) and next prime (22237109).

It is a cyclic number.

It is not a de Polignac number, because 22237091 - 2⁶ = 22237027 is a prime.

It is a super-2 number, since 2×22237091² = 988976432284562, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22237091.

It is not a weakly prime, because it can be changed into another prime (22237031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11118545 + 11118546.

It is an arithmetic number, because the mean of its divisors is an integer number (11118546).

Almost surely, 2^22237091 is an apocalyptic number.

22237091 is a deficient number, since it is larger than the sum of its proper divisors (1).

22237091 is an equidigital number, since it uses as much as digits as its factorization.

22237091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 22237091 is about 4715.6220162350. The cubic root of 22237091 is about 281.2069118518.

The spelling of 22237091 in words is "twenty-two million, two hundred thirty-seven thousand, ninety-one".