221441442 has 16 divisors (see below), whose sum is σ = 443568960. Its totient is φ = 73699472.

The previous prime is 221441431. The next prime is 221441459. The reversal of 221441442 is 244144122.

221441442 is digitally balanced in base 3, 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, 24342 + ... + 32177.

It is an arithmetic number, because the mean of its divisors is an integer number (27723060).

Almost surely, 2^221441442 is an apocalyptic number.

221441442 is an abundant number, since it is smaller than the sum of its proper divisors (222127518).

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

221441442 is a wasteful number, since it uses less digits than its factorization.

221441442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57177.

The product of its digits is 2048, while the sum is 24.

The square root of 221441442 is about 14880.9086416119. The cubic root of 221441442 is about 604.9966459300.

Adding to 221441442 its reverse (244144122), we get a palindrome (465585564).

The spelling of 221441442 in words is "two hundred twenty-one million, four hundred forty-one thousand, four hundred forty-two".