221964098227 has 4 divisors (see below), whose sum is σ = 221966847000. Its totient is φ = 221961349456.

The previous prime is 221964098173. The next prime is 221964098233. The reversal of 221964098227 is 722890469122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221964098227 - 2¹⁵ = 221964065459 is a prime.

It is a super-3 number, since 3×221964098227³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221964098327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1249477 + ... + 1416022.

It is an arithmetic number, because the mean of its divisors is an integer number (55491711750).

Almost surely, 2^221964098227 is an apocalyptic number.

221964098227 is a deficient number, since it is larger than the sum of its proper divisors (2748773).

221964098227 is an equidigital number, since it uses as much as digits as its factorization.

221964098227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748772.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 221964098227 in words is "two hundred twenty-one billion, nine hundred sixty-four million, ninety-eight thousand, two hundred twenty-seven".