210230121 has 16 divisors (see below), whose sum is σ = 286239744. Its totient is φ = 137212944.

The previous prime is 210230113. The next prime is 210230123. The reversal of 210230121 is 121032012.

It is not a de Polignac number, because 210230121 - 2³ = 210230113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210230097 and 210230106.

It is not an unprimeable number, because it can be changed into a prime (210230123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30436 + ... + 36698.

It is an arithmetic number, because the mean of its divisors is an integer number (17889984).

Almost surely, 2^210230121 is an apocalyptic number.

It is an amenable number.

210230121 is a deficient number, since it is larger than the sum of its proper divisors (76009623).

210230121 is a wasteful number, since it uses less digits than its factorization.

210230121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6500.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 210230121 is about 14499.3145010376. The cubic root of 210230121 is about 594.6092305051.

Adding to 210230121 its reverse (121032012), we get a palindrome (331262133).

It can be divided in two parts, 2102 and 30121, that added together give a palindrome (32223).

The spelling of 210230121 in words is "two hundred ten million, two hundred thirty thousand, one hundred twenty-one".