22016987 has 2 divisors, whose sum is σ = 22016988. Its totient is φ = 22016986.

The previous prime is 22016947. The next prime is 22016993. The reversal of 22016987 is 78961022.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22016987 - 2¹⁴ = 22000603 is a prime.

It is not a weakly prime, because it can be changed into another prime (22016947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11008493 + 11008494.

It is an arithmetic number, because the mean of its divisors is an integer number (11008494).

Almost surely, 2^22016987 is an apocalyptic number.

22016987 is a deficient number, since it is larger than the sum of its proper divisors (1).

22016987 is an equidigital number, since it uses as much as digits as its factorization.

22016987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 22016987 is about 4692.2262306926. The cubic root of 22016987 is about 280.2760330604.

The spelling of 22016987 in words is "twenty-two million, sixteen thousand, nine hundred eighty-seven".