22321087 has 2 divisors, whose sum is σ = 22321088. Its totient is φ = 22321086.

The previous prime is 22321069. The next prime is 22321093. The reversal of 22321087 is 78012322.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22321087 is a prime.

It is a super-3 number, since 3×22321087³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22321007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11160543 + 11160544.

It is an arithmetic number, because the mean of its divisors is an integer number (11160544).

Almost surely, 2^22321087 is an apocalyptic number.

22321087 is a deficient number, since it is larger than the sum of its proper divisors (1).

22321087 is an equidigital number, since it uses as much as digits as its factorization.

22321087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 22321087 is about 4724.5197639549. The cubic root of 22321087 is about 281.5605339123.

The spelling of 22321087 in words is "twenty-two million, three hundred twenty-one thousand, eighty-seven".