221423446417443 has 16 divisors (see below), whose sum is σ = 296102926517760. Its totient is φ = 147179935558656.

The previous prime is 221423446417429. The next prime is 221423446417463. The reversal of 221423446417443 is 344714644324122.

It is not a de Polignac number, because 221423446417443 - 2⁴⁵ = 186239074328611 is a prime.

It is a super-2 number, since 2×221423446417443² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221423446417403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10643230 + ... + 23582307.

It is an arithmetic number, because the mean of its divisors is an integer number (18506432907360).

Almost surely, 2^{221423446417443} is an apocalyptic number.

221423446417443 is a deficient number, since it is larger than the sum of its proper divisors (74679480100317).

221423446417443 is a wasteful number, since it uses less digits than its factorization.

221423446417443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34231906.

The product of its digits is 12386304, while the sum is 51.

The spelling of 221423446417443 in words is "two hundred twenty-one trillion, four hundred twenty-three billion, four hundred forty-six million, four hundred seventeen thousand, four hundred forty-three".