1233210221 has 8 divisors (see below), whose sum is σ = 1254395904. Its totient is φ = 1212055920.

The previous prime is 1233210217. The next prime is 1233210227. The reversal of 1233210221 is 1220123321.

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 1233210221 - 2² = 1233210217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1233210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233210227) 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, 79700 + ... + 93906.

It is an arithmetic number, because the mean of its divisors is an integer number (156799488).

Almost surely, 2^1233210221 is an apocalyptic number.

It is an amenable number.

1233210221 is a deficient number, since it is larger than the sum of its proper divisors (21185683).

1233210221 is a wasteful number, since it uses less digits than its factorization.

1233210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15691.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1233210221 is about 35117.0930032655. The cubic root of 1233210221 is about 1072.3725908965.

Adding to 1233210221 its reverse (1220123321), we get a palindrome (2453333542).

The spelling of 1233210221 in words is "one billion, two hundred thirty-three million, two hundred ten thousand, two hundred twenty-one".