11229997 has 4 divisors (see below), whose sum is σ = 11236960. Its totient is φ = 11223036.

The previous prime is 11229973. The next prime is 11230031. The reversal of 11229997 is 79992211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11229997 is a prime.

It is a super-2 number, since 2×11229997² = 252225665240018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11229947) 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, 328 + ... + 4750.

It is an arithmetic number, because the mean of its divisors is an integer number (2809240).

Almost surely, 2^11229997 is an apocalyptic number.

It is an amenable number.

11229997 is a deficient number, since it is larger than the sum of its proper divisors (6963).

11229997 is an equidigital number, since it uses as much as digits as its factorization.

11229997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6962.

The product of its digits is 20412, while the sum is 40.

The square root of 11229997 is about 3351.1187684115. The cubic root of 11229997 is about 223.9373562603.

The spelling of 11229997 in words is "eleven million, two hundred twenty-nine thousand, nine hundred ninety-seven".