221042352 has 40 divisors (see below), whose sum is σ = 601082560. Its totient is φ = 69802560.

The previous prime is 221042309. The next prime is 221042377. The reversal of 221042352 is 253240122.

221042352 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 120274 + ... + 122097.

It is an arithmetic number, because the mean of its divisors is an integer number (15027064).

Almost surely, 2^221042352 is an apocalyptic number.

It is an amenable number.

221042352 is an abundant number, since it is smaller than the sum of its proper divisors (380040208).

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

221042352 is a wasteful number, since it uses less digits than its factorization.

221042352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242401 (or 242395 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 221042352 is about 14867.4931309888. The cubic root of 221042352 is about 604.6329782209.

Adding to 221042352 its reverse (253240122), we get a palindrome (474282474).

The spelling of 221042352 in words is "two hundred twenty-one million, forty-two thousand, three hundred fifty-two".