11212945 has 32 divisors (see below), whose sum is σ = 15396480. Its totient is φ = 7787520.

The previous prime is 11212921. The next prime is 11212973. The reversal of 11212945 is 54921211.

It is a happy number.

It is not a de Polignac number, because 11212945 - 2⁵ = 11212913 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85530 + ... + 85660.

It is an arithmetic number, because the mean of its divisors is an integer number (481140).

Almost surely, 2^11212945 is an apocalyptic number.

It is an amenable number.

11212945 is a deficient number, since it is larger than the sum of its proper divisors (4183535).

11212945 is a wasteful number, since it uses less digits than its factorization.

11212945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225.

The product of its digits is 720, while the sum is 25.

The square root of 11212945 is about 3348.5735769130. The cubic root of 11212945 is about 223.8239542062.

The spelling of 11212945 in words is "eleven million, two hundred twelve thousand, nine hundred forty-five".