11100220211987 has 2 divisors, whose sum is σ = 11100220211988. Its totient is φ = 11100220211986.

The previous prime is 11100220211959. The next prime is 11100220212031. The reversal of 11100220211987 is 78911202200111.

It is a weak prime.

It is an emirp because it is prime and its reverse (78911202200111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11100220211987 - 2³⁶ = 11031500735251 is a prime.

It is not a weakly prime, because it can be changed into another prime (11100220211947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550110105993 + 5550110105994.

It is an arithmetic number, because the mean of its divisors is an integer number (5550110105994).

Almost surely, 2^{11100220211987} is an apocalyptic number.

11100220211987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100220211987 is an equidigital number, since it uses as much as digits as its factorization.

11100220211987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 35.

The spelling of 11100220211987 in words is "eleven trillion, one hundred billion, two hundred twenty million, two hundred eleven thousand, nine hundred eighty-seven".