2211001099987 has 2 divisors, whose sum is σ = 2211001099988. Its totient is φ = 2211001099986.

The previous prime is 2211001099969. The next prime is 2211001100017. The reversal of 2211001099987 is 7899901001122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2211001099987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2211001099987.

It is not a weakly prime, because it can be changed into another prime (2211001099187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105500549993 + 1105500549994.

It is an arithmetic number, because the mean of its divisors is an integer number (1105500549994).

Almost surely, 2^{2211001099987} is an apocalyptic number.

2211001099987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211001099987 is an equidigital number, since it uses as much as digits as its factorization.

2211001099987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 49.

The spelling of 2211001099987 in words is "two trillion, two hundred eleven billion, one million, ninety-nine thousand, nine hundred eighty-seven".