221943834268 has 12 divisors (see below), whose sum is σ = 418278764680. Its totient is φ = 102435615792.

The previous prime is 221943834257. The next prime is 221943834311. The reversal of 221943834268 is 862438349122.

221943834268 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (52), and also a Moran number because the ratio is a prime number: 4268150659 = 221943834268 / (2 + 2 + 1 + 9 + 4 + 3 + 8 + 3 + 4 + 2 + 6 + 8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2134075278 + ... + 2134075381.

Almost surely, 2^221943834268 is an apocalyptic number.

It is an amenable number.

221943834268 is a deficient number, since it is larger than the sum of its proper divisors (196334930412).

221943834268 is a wasteful number, since it uses less digits than its factorization.

221943834268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4268150676 (or 4268150674 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 52.

The spelling of 221943834268 in words is "two hundred twenty-one billion, nine hundred forty-three million, eight hundred thirty-four thousand, two hundred sixty-eight".