221964098327 has 2 divisors, whose sum is σ = 221964098328. Its totient is φ = 221964098326.

The previous prime is 221964098311. The next prime is 221964098353. The reversal of 221964098327 is 723890469122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221964098327 - 2⁴ = 221964098311 is a prime.

It is a super-2 number, since 2×221964098327² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221964038327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110982049163 + 110982049164.

It is an arithmetic number, because the mean of its divisors is an integer number (110982049164).

Almost surely, 2^221964098327 is an apocalyptic number.

221964098327 is a deficient number, since it is larger than the sum of its proper divisors (1).

221964098327 is an equidigital number, since it uses as much as digits as its factorization.

221964098327 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 221964098327 in words is "two hundred twenty-one billion, nine hundred sixty-four million, ninety-eight thousand, three hundred twenty-seven".