22101010199887 has 2 divisors, whose sum is σ = 22101010199888. Its totient is φ = 22101010199886.

The previous prime is 22101010199833. The next prime is 22101010199909. The reversal of 22101010199887 is 78899101010122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22101010199887 - 2¹¹ = 22101010197839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22101010199887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22101010199987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050505099943 + 11050505099944.

It is an arithmetic number, because the mean of its divisors is an integer number (11050505099944).

Almost surely, 2^{22101010199887} is an apocalyptic number.

22101010199887 is a deficient number, since it is larger than the sum of its proper divisors (1).

22101010199887 is an equidigital number, since it uses as much as digits as its factorization.

22101010199887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 49.

The spelling of 22101010199887 in words is "twenty-two trillion, one hundred one billion, ten million, one hundred ninety-nine thousand, eight hundred eighty-seven".