221986352932 has 12 divisors (see below), whose sum is σ = 397510446256. Its totient is φ = 108411939720.

The previous prime is 221986352899. The next prime is 221986352969. The reversal of 221986352932 is 239253689122.

It is a self number, because there is not a number n which added to its sum of digits gives 221986352932.

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 3 ways as a sum of consecutive naturals, for example, 645308994 + ... + 645309337.

Almost surely, 2^221986352932 is an apocalyptic number.

It is an amenable number.

221986352932 is a deficient number, since it is larger than the sum of its proper divisors (175524093324).

221986352932 is a wasteful number, since it uses less digits than its factorization.

221986352932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290618378 (or 1290618376 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 52.

The spelling of 221986352932 in words is "two hundred twenty-one billion, nine hundred eighty-six million, three hundred fifty-two thousand, nine hundred thirty-two".