221000100733 has 2 divisors, whose sum is σ = 221000100734. Its totient is φ = 221000100732.

The previous prime is 221000100707. The next prime is 221000100751. The reversal of 221000100733 is 337001000122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218894851044 + 2105249689 = 467862^2 + 45883^2 .

It is a cyclic number.

It is not a de Polignac number, because 221000100733 - 2⁵ = 221000100701 is a prime.

It is a super-2 number, since 2×221000100733² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221000100733.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221000100703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110500050366 + 110500050367.

It is an arithmetic number, because the mean of its divisors is an integer number (110500050367).

Almost surely, 2^221000100733 is an apocalyptic number.

It is an amenable number.

221000100733 is a deficient number, since it is larger than the sum of its proper divisors (1).

221000100733 is an equidigital number, since it uses as much as digits as its factorization.

221000100733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 19.

Adding to 221000100733 its reverse (337001000122), we get a palindrome (558001100855).

The spelling of 221000100733 in words is "two hundred twenty-one billion, one hundred thousand, seven hundred thirty-three".