11212140 has 24 divisors (see below), whose sum is σ = 31394160. Its totient is φ = 2989888.

The previous prime is 11212127. The next prime is 11212141. The reversal of 11212140 is 4121211.

It is a happy number.

11212140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (11212141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93375 + ... + 93494.

It is an arithmetic number, because the mean of its divisors is an integer number (1308090).

Almost surely, 2^11212140 is an apocalyptic number.

11212140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11212140 is an abundant number, since it is smaller than the sum of its proper divisors (20182020).

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

11212140 is a wasteful number, since it uses less digits than its factorization.

11212140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186881 (or 186879 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 11212140 is about 3348.4533743207. The cubic root of 11212140 is about 223.8185978199.

Adding to 11212140 its reverse (4121211), we get a palindrome (15333351).

The spelling of 11212140 in words is "eleven million, two hundred twelve thousand, one hundred forty".