221211313333033 has 4 divisors (see below), whose sum is σ = 221211543307348. Its totient is φ = 221211083358720.

The previous prime is 221211313333019. The next prime is 221211313333123. The reversal of 221211313333033 is 330333313112122.

It is a happy number.

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 135470324845584 + 85740988487449 = 11639172^2 + 9259643^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221211313333033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221211313332986 and 221211313333004.

It is not an unprimeable number, because it can be changed into a prime (221211313333333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113538228 + ... + 115470133.

It is an arithmetic number, because the mean of its divisors is an integer number (55302885826837).

Almost surely, 2^{221211313333033} is an apocalyptic number.

It is an amenable number.

221211313333033 is a deficient number, since it is larger than the sum of its proper divisors (229974315).

221211313333033 is an equidigital number, since it uses as much as digits as its factorization.

221211313333033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229974314.

The product of its (nonzero) digits is 17496, while the sum is 31.

Adding to 221211313333033 its reverse (330333313112122), we get a palindrome (551544626445155).

The spelling of 221211313333033 in words is "two hundred twenty-one trillion, two hundred eleven billion, three hundred thirteen million, three hundred thirty-three thousand, thirty-three".