22290871 has 2 divisors, whose sum is σ = 22290872. Its totient is φ = 22290870.

The previous prime is 22290869. The next prime is 22290883. The reversal of 22290871 is 17809222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22290871 - 2¹ = 22290869 is a prime.

It is a super-3 number, since 3×22290871³ (a number of 23 digits) contains 333 as substring.

Together with 22290869, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22290811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11145435 + 11145436.

It is an arithmetic number, because the mean of its divisors is an integer number (11145436).

Almost surely, 2^22290871 is an apocalyptic number.

22290871 is a deficient number, since it is larger than the sum of its proper divisors (1).

22290871 is an equidigital number, since it uses as much as digits as its factorization.

22290871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 22290871 is about 4721.3208956816. The cubic root of 22290871 is about 281.4334272754.

The spelling of 22290871 in words is "twenty-two million, two hundred ninety thousand, eight hundred seventy-one".