1210221133 has 16 divisors (see below), whose sum is σ = 1347451200. Its totient is φ = 1077981840.

The previous prime is 1210221119. The next prime is 1210221161. The reversal of 1210221133 is 3311220121.

It is not a de Polignac number, because 1210221133 - 2⁵ = 1210221101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210221113) 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, 1637278 + ... + 1638016.

It is an arithmetic number, because the mean of its divisors is an integer number (84215700).

Almost surely, 2^1210221133 is an apocalyptic number.

It is an amenable number.

1210221133 is a deficient number, since it is larger than the sum of its proper divisors (137230067).

1210221133 is an frugal number, since it uses more digits than its factorization.

1210221133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909 (or 803 counting only the distinct ones).

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

The square root of 1210221133 is about 34788.2326800313. The cubic root of 1210221133 is about 1065.6671473633.

Adding to 1210221133 its reverse (3311220121), we get a palindrome (4521441254).

The spelling of 1210221133 in words is "one billion, two hundred ten million, two hundred twenty-one thousand, one hundred thirty-three".