221964098233 has 2 divisors, whose sum is σ = 221964098234. Its totient is φ = 221964098232.

The previous prime is 221964098173. The next prime is 221964098309. The reversal of 221964098233 is 332890469122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201755485584 + 20208612649 = 449172^2 + 142157^2 .

It is a cyclic number.

It is not a de Polignac number, because 221964098233 - 2²⁵ = 221930543801 is a prime.

It is not a weakly prime, because it can be changed into another prime (221964048233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110982049116 + 110982049117.

It is an arithmetic number, because the mean of its divisors is an integer number (110982049117).

Almost surely, 2^221964098233 is an apocalyptic number.

It is an amenable number.

221964098233 is a deficient number, since it is larger than the sum of its proper divisors (1).

221964098233 is an equidigital number, since it uses as much as digits as its factorization.

221964098233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1119744, while the sum is 49.

The spelling of 221964098233 in words is "two hundred twenty-one billion, nine hundred sixty-four million, ninety-eight thousand, two hundred thirty-three".