11121372 has 18 divisors (see below), whose sum is σ = 28112448. Its totient is φ = 3707112.

The previous prime is 11121371. The next prime is 11121389. The reversal of 11121372 is 27312111.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 154428 + ... + 154499.

Almost surely, 2^11121372 is an apocalyptic number.

11121372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11121372 is an abundant number, since it is smaller than the sum of its proper divisors (16991076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11121372 is a wasteful number, since it uses less digits than its factorization.

11121372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308937 (or 308932 counting only the distinct ones).

The product of its digits is 84, while the sum is 18.

The square root of 11121372 is about 3334.8721114909. The cubic root of 11121372 is about 223.2129853315.

Adding to 11121372 its reverse (27312111), we get a palindrome (38433483).

The spelling of 11121372 in words is "eleven million, one hundred twenty-one thousand, three hundred seventy-two".