230021320121 has 4 divisors (see below), whose sum is σ = 230089518372. Its totient is φ = 229953121872.

The previous prime is 230021320117. The next prime is 230021320153. The reversal of 230021320121 is 121023120032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 195661136896 + 34360183225 = 442336^2 + 185365^2 .

It is a cyclic number.

It is not a de Polignac number, because 230021320121 - 2² = 230021320117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 230021320121.

It is not an unprimeable number, because it can be changed into a prime (230021322121) 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, 34094066 + ... + 34100811.

It is an arithmetic number, because the mean of its divisors is an integer number (57522379593).

Almost surely, 2^230021320121 is an apocalyptic number.

It is an amenable number.

230021320121 is a deficient number, since it is larger than the sum of its proper divisors (68198251).

230021320121 is an equidigital number, since it uses as much as digits as its factorization.

230021320121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68198250.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 230021320121 its reverse (121023120032), we get a palindrome (351044440153).

The spelling of 230021320121 in words is "two hundred thirty billion, twenty-one million, three hundred twenty thousand, one hundred twenty-one".