221101121089 has 2 divisors, whose sum is σ = 221101121090. Its totient is φ = 221101121088.

The previous prime is 221101121053. The next prime is 221101121179. The reversal of 221101121089 is 980121101122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194529513025 + 26571608064 = 441055^2 + 163008^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221101121089 is a prime.

It is not a weakly prime, because it can be changed into another prime (221101121039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110550560544 + 110550560545.

It is an arithmetic number, because the mean of its divisors is an integer number (110550560545).

Almost surely, 2^221101121089 is an apocalyptic number.

It is an amenable number.

221101121089 is a deficient number, since it is larger than the sum of its proper divisors (1).

221101121089 is an equidigital number, since it uses as much as digits as its factorization.

221101121089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 28.

The spelling of 221101121089 in words is "two hundred twenty-one billion, one hundred one million, one hundred twenty-one thousand, eighty-nine".