2104433234221 has 4 divisors (see below), whose sum is σ = 2176999897500. Its totient is φ = 2031866570944.

The previous prime is 2104433234201. The next prime is 2104433234227. The reversal of 2104433234221 is 1224323344012.

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 1786528965321 + 317904268900 = 1336611^2 + 563830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2104433234221 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 (2104433234227) 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, 36283331596 + ... + 36283331653.

It is an arithmetic number, because the mean of its divisors is an integer number (544249974375).

Almost surely, 2^{2104433234221} is an apocalyptic number.

It is an amenable number.

2104433234221 is a deficient number, since it is larger than the sum of its proper divisors (72566663279).

2104433234221 is an equidigital number, since it uses as much as digits as its factorization.

2104433234221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72566663278.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 2104433234221 its reverse (1224323344012), we get a palindrome (3328756578233).

The spelling of 2104433234221 in words is "two trillion, one hundred four billion, four hundred thirty-three million, two hundred thirty-four thousand, two hundred twenty-one".