221354732 has 6 divisors (see below), whose sum is σ = 387370788. Its totient is φ = 110677364.

The previous prime is 221354723. The next prime is 221354753. The reversal of 221354732 is 237453122.

It is a junction number, because it is equal to n+sod(n) for n = 221354695 and 221354704.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27669338 + ... + 27669345.

It is an arithmetic number, because the mean of its divisors is an integer number (64561798).

Almost surely, 2^221354732 is an apocalyptic number.

It is an amenable number.

221354732 is a deficient number, since it is larger than the sum of its proper divisors (166016056).

221354732 is a wasteful number, since it uses less digits than its factorization.

221354732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55338687 (or 55338685 counting only the distinct ones).

The product of its digits is 10080, while the sum is 29.

The square root of 221354732 is about 14877.9948917857. The cubic root of 221354732 is about 604.9176692829.

The spelling of 221354732 in words is "two hundred twenty-one million, three hundred fifty-four thousand, seven hundred thirty-two".