1221333133323 has 8 divisors (see below), whose sum is σ = 1628449422336. Its totient is φ = 814219466600.

The previous prime is 1221333133303. The next prime is 1221333133333. The reversal of 1221333133323 is 3233313331221.

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 1221333133323 - 2¹² = 1221333129227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1221333133303) 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, 1112038 + ... + 1918148.

It is an arithmetic number, because the mean of its divisors is an integer number (203556177792).

Almost surely, 2^{1221333133323} is an apocalyptic number.

1221333133323 is a deficient number, since it is larger than the sum of its proper divisors (407116289013).

1221333133323 is an equidigital number, since it uses as much as digits as its factorization.

1221333133323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311145.

The product of its digits is 17496, while the sum is 30.

Adding to 1221333133323 its reverse (3233313331221), we get a palindrome (4454646464544).

The spelling of 1221333133323 in words is "one trillion, two hundred twenty-one billion, three hundred thirty-three million, one hundred thirty-three thousand, three hundred twenty-three".