221034404332 has 24 divisors (see below), whose sum is σ = 443342801664. Its totient is φ = 94456031952.

The previous prime is 221034404329. The next prime is 221034404341. The reversal of 221034404332 is 233404430122.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 221034404332.

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 7 ways as a sum of consecutive naturals, for example, 11365048 + ... + 11384479.

It is an arithmetic number, because the mean of its divisors is an integer number (18472616736).

Almost surely, 2^221034404332 is an apocalyptic number.

It is an amenable number.

221034404332 is an abundant number, since it is smaller than the sum of its proper divisors (222308397332).

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

221034404332 is a wasteful number, since it uses less digits than its factorization.

221034404332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22749885 (or 22749883 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 221034404332 its reverse (233404430122), we get a palindrome (454438834454).

The spelling of 221034404332 in words is "two hundred twenty-one billion, thirty-four million, four hundred four thousand, three hundred thirty-two".