221622466434 has 16 divisors (see below), whose sum is σ = 448585234272. Its totient is φ = 72984105248.

The previous prime is 221622466423. The next prime is 221622466447. The reversal of 221622466434 is 434664226122.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222512019 + ... + 222513014.

It is an arithmetic number, because the mean of its divisors is an integer number (28036577142).

Almost surely, 2^221622466434 is an apocalyptic number.

221622466434 is an abundant number, since it is smaller than the sum of its proper divisors (226962767838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221622466434 is a wasteful number, since it uses less digits than its factorization.

221622466434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445025121.

The product of its digits is 663552, while the sum is 42.

The spelling of 221622466434 in words is "two hundred twenty-one billion, six hundred twenty-two million, four hundred sixty-six thousand, four hundred thirty-four".