1210313221 has 8 divisors (see below), whose sum is σ = 1319119200. Its totient is φ = 1103750832.

The previous prime is 1210313207. The next prime is 1210313257. The reversal of 1210313221 is 1223130121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1210313221 - 2⁵ = 1210313189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210313195 and 1210313204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210313201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559771 + ... + 561928.

It is an arithmetic number, because the mean of its divisors is an integer number (164889900).

Almost surely, 2^1210313221 is an apocalyptic number.

It is an amenable number.

1210313221 is a deficient number, since it is larger than the sum of its proper divisors (108805979).

1210313221 is a wasteful number, since it uses less digits than its factorization.

1210313221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121795.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1210313221 is about 34789.5562058501. The cubic root of 1210313221 is about 1065.6941762163.

Adding to 1210313221 its reverse (1223130121), we get a palindrome (2433443342).

The spelling of 1210313221 in words is "one billion, two hundred ten million, three hundred thirteen thousand, two hundred twenty-one".