1210113221 has 4 divisors (see below), whose sum is σ = 1210273152. Its totient is φ = 1209953292.

The previous prime is 1210113209. The next prime is 1210113257. The reversal of 1210113221 is 1223110121.

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 1210113221 - 2³⁰ = 136371397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210113196 and 1210113205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210113521) 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, 68021 + ... + 83946.

It is an arithmetic number, because the mean of its divisors is an integer number (302568288).

Almost surely, 2^1210113221 is an apocalyptic number.

It is an amenable number.

1210113221 is a deficient number, since it is larger than the sum of its proper divisors (159931).

1210113221 is an equidigital number, since it uses as much as digits as its factorization.

1210113221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159930.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1210113221 is about 34786.6816612335. The cubic root of 1210113221 is about 1065.6354722454.

Adding to 1210113221 its reverse (1223110121), we get a palindrome (2433223342).

The spelling of 1210113221 in words is "one billion, two hundred ten million, one hundred thirteen thousand, two hundred twenty-one".