221467954394 has 8 divisors (see below), whose sum is σ = 349686243840. Its totient is φ = 104905873116.

The previous prime is 221467954387. The next prime is 221467954417. The reversal of 221467954394 is 493459764122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2914051994 + ... + 2914052069.

It is an arithmetic number, because the mean of its divisors is an integer number (43710780480).

Almost surely, 2^221467954394 is an apocalyptic number.

221467954394 is a deficient number, since it is larger than the sum of its proper divisors (128218289446).

221467954394 is a wasteful number, since it uses less digits than its factorization.

221467954394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5828104084.

The product of its digits is 13063680, while the sum is 56.

The spelling of 221467954394 in words is "two hundred twenty-one billion, four hundred sixty-seven million, nine hundred fifty-four thousand, three hundred ninety-four".