221214442 has 16 divisors (see below), whose sum is σ = 337784832. Its totient is φ = 108637200.

The previous prime is 221214431. The next prime is 221214463. The reversal of 221214442 is 244412122.

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, 21343 + ... + 29965.

It is an arithmetic number, because the mean of its divisors is an integer number (21111552).

Almost surely, 2^221214442 is an apocalyptic number.

221214442 is a deficient number, since it is larger than the sum of its proper divisors (116570390).

221214442 is a wasteful number, since it uses less digits than its factorization.

221214442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8853.

The product of its digits is 1024, while the sum is 22.

The square root of 221214442 is about 14873.2794635212. The cubic root of 221214442 is about 604.7898475528.

Adding to 221214442 its reverse (244412122), we get a palindrome (465626564).

The spelling of 221214442 in words is "two hundred twenty-one million, two hundred fourteen thousand, four hundred forty-two".