11101211991927 has 16 divisors (see below), whose sum is σ = 16453124236000. Its totient is φ = 7397710083072.

The previous prime is 11101211991923. The next prime is 11101211991929. The reversal of 11101211991927 is 72919911210111.

It is not a de Polignac number, because 11101211991927 - 2² = 11101211991923 is a prime.

It is a super-2 number, since 2×11101211991927² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101211991923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85987402 + ... + 86116407.

It is an arithmetic number, because the mean of its divisors is an integer number (1028320264750).

Almost surely, 2^{11101211991927} is an apocalyptic number.

11101211991927 is a deficient number, since it is larger than the sum of its proper divisors (5351912244073).

11101211991927 is a wasteful number, since it uses less digits than its factorization.

11101211991927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172106207 (or 172106201 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 45.

The spelling of 11101211991927 in words is "eleven trillion, one hundred one billion, two hundred eleven million, nine hundred ninety-one thousand, nine hundred twenty-seven".