221012210210993 has 2 divisors, whose sum is σ = 221012210210994. Its totient is φ = 221012210210992.

The previous prime is 221012210210923. The next prime is 221012210211041. The reversal of 221012210210993 is 399012012210122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221007708203584 + 4502007409 = 14866328^2 + 67097^2 .

It is a cyclic number.

It is not a de Polignac number, because 221012210210993 - 2¹⁰ = 221012210209969 is a prime.

It is not a weakly prime, because it can be changed into another prime (221012210210923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110506105105496 + 110506105105497.

It is an arithmetic number, because the mean of its divisors is an integer number (110506105105497).

Almost surely, 2^{221012210210993} is an apocalyptic number.

It is an amenable number.

221012210210993 is a deficient number, since it is larger than the sum of its proper divisors (1).

221012210210993 is an equidigital number, since it uses as much as digits as its factorization.

221012210210993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 221012210210993 in words is "two hundred twenty-one trillion, twelve billion, two hundred ten million, two hundred ten thousand, nine hundred ninety-three".