11122211109887 has 2 divisors, whose sum is σ = 11122211109888. Its totient is φ = 11122211109886.

The previous prime is 11122211109859. The next prime is 11122211110013. The reversal of 11122211109887 is 78890111222111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11122211109887 - 2¹⁰ = 11122211108863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11122211109857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5561105554943 + 5561105554944.

It is an arithmetic number, because the mean of its divisors is an integer number (5561105554944).

Almost surely, 2^{11122211109887} is an apocalyptic number.

11122211109887 is a deficient number, since it is larger than the sum of its proper divisors (1).

11122211109887 is an equidigital number, since it uses as much as digits as its factorization.

11122211109887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 44.

The spelling of 11122211109887 in words is "eleven trillion, one hundred twenty-two billion, two hundred eleven million, one hundred nine thousand, eight hundred eighty-seven".