229601021 has 8 divisors (see below), whose sum is σ = 253945944. Its totient is φ = 206210880.

The previous prime is 229600981. The next prime is 229601051. The reversal of 229601021 is 120106922.

229601021 = 10714² + 10715².

It can be written as a sum of positive squares in 4 ways, for example, as 44368921 + 185232100 = 6661^2 + 13610^2 .

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 229601021 - 2⁶ = 229600957 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 (229601051) 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, 238190 + ... + 239151.

It is an arithmetic number, because the mean of its divisors is an integer number (31743243).

Almost surely, 2^229601021 is an apocalyptic number.

229601021 is the 10715-th centered square number.

It is an amenable number.

229601021 is a deficient number, since it is larger than the sum of its proper divisors (24344923).

229601021 is a wasteful number, since it uses less digits than its factorization.

229601021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477391.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 229601021 is about 15152.5912305454. The cubic root of 229601021 is about 612.3380849815.

Adding to 229601021 its reverse (120106922), we get a palindrome (349707943).

The spelling of 229601021 in words is "two hundred twenty-nine million, six hundred one thousand, twenty-one".