1210320201 has 4 divisors (see below), whose sum is σ = 1613760272. Its totient is φ = 806880132.

The previous prime is 1210320179. The next prime is 1210320229. The reversal of 1210320201 is 1020230121.

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 not a de Polignac number, because 1210320201 - 2⁹ = 1210319689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210320271) 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, 201720031 + ... + 201720036.

It is an arithmetic number, because the mean of its divisors is an integer number (403440068).

Almost surely, 2^1210320201 is an apocalyptic number.

It is an amenable number.

1210320201 is a deficient number, since it is larger than the sum of its proper divisors (403440071).

1210320201 is an equidigital number, since it uses as much as digits as its factorization.

1210320201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403440070.

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

The square root of 1210320201 is about 34789.6565231679. The cubic root of 1210320201 is about 1065.6962248681.

Adding to 1210320201 its reverse (1020230121), we get a palindrome (2230550322).

The spelling of 1210320201 in words is "one billion, two hundred ten million, three hundred twenty thousand, two hundred one".