11661112 has 8 divisors (see below), whose sum is σ = 21864600. Its totient is φ = 5830552.

The previous prime is 11661101. The next prime is 11661119. The reversal of 11661112 is 21116611.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 11661112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11661119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 728812 + ... + 728827.

It is an arithmetic number, because the mean of its divisors is an integer number (2733075).

Almost surely, 2^11661112 is an apocalyptic number.

It is an amenable number.

11661112 is a deficient number, since it is larger than the sum of its proper divisors (10203488).

11661112 is a wasteful number, since it uses less digits than its factorization.

11661112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457645 (or 1457641 counting only the distinct ones).

The product of its digits is 72, while the sum is 19.

The square root of 11661112 is about 3414.8370385715. The cubic root of 11661112 is about 226.7670700904.

Adding to 11661112 its reverse (21116611), we get a palindrome (32777723).

It can be divided in two parts, 1166 and 1112, that added together give a triangular number (2278 = T₆₇).

The spelling of 11661112 in words is "eleven million, six hundred sixty-one thousand, one hundred twelve".