11925221 has 8 divisors (see below), whose sum is σ = 14867904. Its totient is φ = 9292320.

The previous prime is 11925203. The next prime is 11925239. The reversal of 11925221 is 12252911.

It is an interprime number because it is at equal distance from previous prime (11925203) and next prime (11925239).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11925221 - 2⁶ = 11925157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11925241) 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, 77360 + ... + 77513.

It is an arithmetic number, because the mean of its divisors is an integer number (1858488).

Almost surely, 2^11925221 is an apocalyptic number.

11925221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11925221 is a deficient number, since it is larger than the sum of its proper divisors (2942683).

11925221 is a wasteful number, since it uses less digits than its factorization.

11925221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154891.

The product of its digits is 360, while the sum is 23.

The square root of 11925221 is about 3453.2913285734. The cubic root of 11925221 is about 228.4662984354.

The spelling of 11925221 in words is "eleven million, nine hundred twenty-five thousand, two hundred twenty-one".