221622227946 has 48 divisors (see below), whose sum is σ = 548832158784. Its totient is φ = 63314485632.

The previous prime is 221622227933. The next prime is 221622228007. The reversal of 221622227946 is 649722226122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1306450 + ... + 1466306.

It is an arithmetic number, because the mean of its divisors is an integer number (11434003308).

Almost surely, 2^221622227946 is an apocalyptic number.

221622227946 is an abundant number, since it is smaller than the sum of its proper divisors (327209930838).

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

221622227946 is a wasteful number, since it uses less digits than its factorization.

221622227946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170875 (or 170872 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The spelling of 221622227946 in words is "two hundred twenty-one billion, six hundred twenty-two million, two hundred twenty-seven thousand, nine hundred forty-six".