12222491 has 8 divisors (see below), whose sum is σ = 13140480. Its totient is φ = 11332008.

The previous prime is 12222461. The next prime is 12222517. The reversal of 12222491 is 19422221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12222491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12222461) 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, 5951 + ... + 7736.

It is an arithmetic number, because the mean of its divisors is an integer number (1642560).

Almost surely, 2^12222491 is an apocalyptic number.

12222491 is a deficient number, since it is larger than the sum of its proper divisors (917989).

12222491 is a wasteful number, since it uses less digits than its factorization.

12222491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13753.

The product of its digits is 576, while the sum is 23.

The square root of 12222491 is about 3496.0679341226. The cubic root of 12222491 is about 230.3491295045.

The spelling of 12222491 in words is "twelve million, two hundred twenty-two thousand, four hundred ninety-one".