229348021 has 4 divisors (see below), whose sum is σ = 262112032. Its totient is φ = 196584012.

The previous prime is 229347971. The next prime is 229348033. The reversal of 229348021 is 120843922.

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 229348021 - 2¹⁵ = 229315253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229348081) 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, 16381995 + ... + 16382008.

It is an arithmetic number, because the mean of its divisors is an integer number (65528008).

Almost surely, 2^229348021 is an apocalyptic number.

It is an amenable number.

229348021 is a deficient number, since it is larger than the sum of its proper divisors (32764011).

229348021 is an equidigital number, since it uses as much as digits as its factorization.

229348021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32764010.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 229348021 is about 15144.2405223900. The cubic root of 229348021 is about 612.1130881980.

The spelling of 229348021 in words is "two hundred twenty-nine million, three hundred forty-eight thousand, twenty-one".