221133302993 has 2 divisors, whose sum is σ = 221133302994. Its totient is φ = 221133302992.

The previous prime is 221133302989. The next prime is 221133303049. The reversal of 221133302993 is 399203331122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200159601664 + 20973701329 = 447392^2 + 144823^2 .

It is a cyclic number.

It is not a de Polignac number, because 221133302993 - 2² = 221133302989 is a prime.

It is not a weakly prime, because it can be changed into another prime (221133302983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110566651496 + 110566651497.

It is an arithmetic number, because the mean of its divisors is an integer number (110566651497).

Almost surely, 2^221133302993 is an apocalyptic number.

It is an amenable number.

221133302993 is a deficient number, since it is larger than the sum of its proper divisors (1).

221133302993 is an equidigital number, since it uses as much as digits as its factorization.

221133302993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 38.

The spelling of 221133302993 in words is "two hundred twenty-one billion, one hundred thirty-three million, three hundred two thousand, nine hundred ninety-three".