1233313310221 has 4 divisors (see below), whose sum is σ = 1256583372732. Its totient is φ = 1210043247712.

The previous prime is 1233313310189. The next prime is 1233313310237. The reversal of 1233313310221 is 1220133133321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 644786516196 + 588526794025 = 802986^2 + 767155^2 .

It is a cyclic number.

It is not a de Polignac number, because 1233313310221 - 2⁵ = 1233313310189 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 (1233313310521) 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, 11635031176 + ... + 11635031281.

It is an arithmetic number, because the mean of its divisors is an integer number (314145843183).

Almost surely, 2^{1233313310221} is an apocalyptic number.

It is an amenable number.

1233313310221 is a deficient number, since it is larger than the sum of its proper divisors (23270062511).

1233313310221 is an equidigital number, since it uses as much as digits as its factorization.

1233313310221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23270062510.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1233313310221 its reverse (1220133133321), we get a palindrome (2453446443542).

The spelling of 1233313310221 in words is "one trillion, two hundred thirty-three billion, three hundred thirteen million, three hundred ten thousand, two hundred twenty-one".