2100202099987 has 2 divisors, whose sum is σ = 2100202099988. Its totient is φ = 2100202099986.

The previous prime is 2100202099981. The next prime is 2100202100021. The reversal of 2100202099987 is 7899902020012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100202099987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2100202099987.

It is not a weakly prime, because it can be changed into another prime (2100202099981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050101049993 + 1050101049994.

It is an arithmetic number, because the mean of its divisors is an integer number (1050101049994).

Almost surely, 2^{2100202099987} is an apocalyptic number.

2100202099987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100202099987 is an equidigital number, since it uses as much as digits as its factorization.

2100202099987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 49.

The spelling of 2100202099987 in words is "two trillion, one hundred billion, two hundred two million, ninety-nine thousand, nine hundred eighty-seven".