11101988 has 12 divisors (see below), whose sum is σ = 19577712. Its totient is φ = 5508360.

The previous prime is 11101957. The next prime is 11102009. The reversal of 11101988 is 88910111.

It is a self number, because there is not a number n which added to its sum of digits gives 11101988.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10070 + ... + 11117.

It is an arithmetic number, because the mean of its divisors is an integer number (1631476).

Almost surely, 2^11101988 is an apocalyptic number.

It is an amenable number.

11101988 is a deficient number, since it is larger than the sum of its proper divisors (8475724).

11101988 is a wasteful number, since it uses less digits than its factorization.

11101988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21322 (or 21320 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 29.

The square root of 11101988 is about 3331.9645856461. The cubic root of 11101988 is about 223.0832268593.

The spelling of 11101988 in words is "eleven million, one hundred one thousand, nine hundred eighty-eight".