11100112691 has 2 divisors, whose sum is σ = 11100112692. Its totient is φ = 11100112690.

The previous prime is 11100112669. The next prime is 11100112757. The reversal of 11100112691 is 19621100111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11100112691 - 2²² = 11095918387 is a prime.

It is a super-2 number, since 2×11100112691² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11100112091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550056345 + 5550056346.

It is an arithmetic number, because the mean of its divisors is an integer number (5550056346).

Almost surely, 2^11100112691 is an apocalyptic number.

11100112691 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100112691 is an equidigital number, since it uses as much as digits as its factorization.

11100112691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 23.

The spelling of 11100112691 in words is "eleven billion, one hundred million, one hundred twelve thousand, six hundred ninety-one".