230101021 has 4 divisors (see below), whose sum is σ = 230457312. Its totient is φ = 229744732.

The previous prime is 230101019. The next prime is 230101033. The reversal of 230101021 is 120101032.

230101021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 230101021 - 2¹ = 230101019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230100989 and 230101007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239101021) 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, 177175 + ... + 178468.

It is an arithmetic number, because the mean of its divisors is an integer number (57614328).

Almost surely, 2^230101021 is an apocalyptic number.

It is an amenable number.

230101021 is a deficient number, since it is larger than the sum of its proper divisors (356291).

230101021 is an equidigital number, since it uses as much as digits as its factorization.

230101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356290.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 230101021 is about 15169.0810862095. The cubic root of 230101021 is about 612.7822570246.

Adding to 230101021 its reverse (120101032), we get a palindrome (350202053).

The spelling of 230101021 in words is "two hundred thirty million, one hundred one thousand, twenty-one".