221101209053 has 2 divisors, whose sum is σ = 221101209054. Its totient is φ = 221101209052.

The previous prime is 221101209047. The next prime is 221101209089. The reversal of 221101209053 is 350902101122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 216609260569 + 4491948484 = 465413^2 + 67022^2 .

It is a cyclic number.

It is not a de Polignac number, because 221101209053 - 2⁴ = 221101209037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221101209013) 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, 110550604526 + 110550604527.

It is an arithmetic number, because the mean of its divisors is an integer number (110550604527).

Almost surely, 2^221101209053 is an apocalyptic number.

It is an amenable number.

221101209053 is a deficient number, since it is larger than the sum of its proper divisors (1).

221101209053 is an equidigital number, since it uses as much as digits as its factorization.

221101209053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The spelling of 221101209053 in words is "two hundred twenty-one billion, one hundred one million, two hundred nine thousand, fifty-three".