222231442 has 4 divisors (see below), whose sum is σ = 333347166. Its totient is φ = 111115720.

The previous prime is 222231433. The next prime is 222231481. The reversal of 222231442 is 244132222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 215825481 + 6405961 = 14691^2 + 2531^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55557859 + ... + 55557862.

Almost surely, 2^222231442 is an apocalyptic number.

222231442 is a deficient number, since it is larger than the sum of its proper divisors (111115724).

222231442 is a wasteful number, since it uses less digits than its factorization.

222231442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111115723.

The product of its digits is 1536, while the sum is 22.

The square root of 222231442 is about 14907.4290875389. The cubic root of 222231442 is about 605.7152408856.

Adding to 222231442 its reverse (244132222), we get a palindrome (466363664).

The spelling of 222231442 in words is "two hundred twenty-two million, two hundred thirty-one thousand, four hundred forty-two".