11100100879949 has 2 divisors, whose sum is σ = 11100100879950. Its totient is φ = 11100100879948.

The previous prime is 11100100879943. The next prime is 11100100879969. The reversal of 11100100879949 is 94997800100111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5900560817449 + 5199540062500 = 2429107^2 + 2280250^2 .

It is an emirp because it is prime and its reverse (94997800100111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11100100879949 - 2²⁴ = 11100084102733 is a prime.

It is a super-2 number, since 2×11100100879949² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11100100879897 and 11100100879906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11100100879943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550050439974 + 5550050439975.

It is an arithmetic number, because the mean of its divisors is an integer number (5550050439975).

Almost surely, 2^{11100100879949} is an apocalyptic number.

It is an amenable number.

11100100879949 is a deficient number, since it is larger than the sum of its proper divisors (1).

11100100879949 is an equidigital number, since it uses as much as digits as its factorization.

11100100879949 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 50.

The spelling of 11100100879949 in words is "eleven trillion, one hundred billion, one hundred million, eight hundred seventy-nine thousand, nine hundred forty-nine".