11212251 has 4 divisors (see below), whose sum is σ = 14949672. Its totient is φ = 7474832.

The previous prime is 11212237. The next prime is 11212277. The reversal of 11212251 is 15221211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15221211 = 3 ⋅5073737.

It is a cyclic number.

It is not a de Polignac number, because 11212251 - 2⁵ = 11212219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11212251.

It is not an unprimeable number, because it can be changed into a prime (11212291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1868706 + ... + 1868711.

It is an arithmetic number, because the mean of its divisors is an integer number (3737418).

Almost surely, 2^11212251 is an apocalyptic number.

11212251 is a deficient number, since it is larger than the sum of its proper divisors (3737421).

11212251 is an equidigital number, since it uses as much as digits as its factorization.

11212251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3737420.

The product of its digits is 40, while the sum is 15.

The square root of 11212251 is about 3348.4699490962. The cubic root of 11212251 is about 223.8193364176.

Adding to 11212251 its reverse (15221211), we get a palindrome (26433462).

The spelling of 11212251 in words is "eleven million, two hundred twelve thousand, two hundred fifty-one".