1210230121 has 4 divisors (see below), whose sum is σ = 1221980032. Its totient is φ = 1198480212.

The previous prime is 1210230107. The next prime is 1210230149. The reversal of 1210230121 is 1210320121.

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 1210230121 - 2⁵ = 1210230089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210230191) 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, 5874801 + ... + 5875006.

It is an arithmetic number, because the mean of its divisors is an integer number (305495008).

Almost surely, 2^1210230121 is an apocalyptic number.

It is an amenable number.

1210230121 is a deficient number, since it is larger than the sum of its proper divisors (11749911).

1210230121 is a wasteful number, since it uses less digits than its factorization.

1210230121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11749910.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1210230121 is about 34788.3618614042. The cubic root of 1210230121 is about 1065.6697855018.

Adding to 1210230121 its reverse (1210320121), we get a palindrome (2420550242).

Subtracting 1210230121 from its reverse (1210320121), we obtain a square (90000 = 300²).

The spelling of 1210230121 in words is "one billion, two hundred ten million, two hundred thirty thousand, one hundred twenty-one".