229597021 has 4 divisors (see below), whose sum is σ = 234482112. Its totient is φ = 224711932.

The previous prime is 229597013. The next prime is 229597033. The reversal of 229597021 is 120795922.

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.

It is a cyclic number.

It is not a de Polignac number, because 229597021 - 2³ = 229597013 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 (229597421) 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, 2442475 + ... + 2442568.

It is an arithmetic number, because the mean of its divisors is an integer number (58620528).

Almost surely, 2^229597021 is an apocalyptic number.

It is an amenable number.

229597021 is a deficient number, since it is larger than the sum of its proper divisors (4885091).

229597021 is an equidigital number, since it uses as much as digits as its factorization.

229597021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4885090.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 229597021 is about 15152.4592393446. The cubic root of 229597021 is about 612.3345290063.

The spelling of 229597021 in words is "two hundred twenty-nine million, five hundred ninety-seven thousand, twenty-one".