22201999987 has 2 divisors, whose sum is σ = 22201999988. Its totient is φ = 22201999986.

The previous prime is 22201999979. The next prime is 22202000011. The reversal of 22201999987 is 78999910222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22201999987 - 2³ = 22201999979 is a prime.

It is not a weakly prime, because it can be changed into another prime (22201999087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100999993 + 11100999994.

It is an arithmetic number, because the mean of its divisors is an integer number (11100999994).

Almost surely, 2^22201999987 is an apocalyptic number.

22201999987 is a deficient number, since it is larger than the sum of its proper divisors (1).

22201999987 is an equidigital number, since it uses as much as digits as its factorization.

22201999987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2939328, while the sum is 58.

The spelling of 22201999987 in words is "twenty-two billion, two hundred one million, nine hundred ninety-nine thousand, nine hundred eighty-seven".