221144342 has 8 divisors (see below), whose sum is σ = 331825032. Its totient is φ = 110536000.

The previous prime is 221144321. The next prime is 221144369. The reversal of 221144342 is 243441122.

221144342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×221144342² = 97809639997225928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9659 + ... + 23142.

It is an arithmetic number, because the mean of its divisors is an integer number (41478129).

Almost surely, 2^221144342 is an apocalyptic number.

221144342 is a deficient number, since it is larger than the sum of its proper divisors (110680690).

221144342 is a wasteful number, since it uses less digits than its factorization.

221144342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36174.

The product of its digits is 1536, while the sum is 23.

The square root of 221144342 is about 14870.9227017021. The cubic root of 221144342 is about 604.7259574394.

Adding to 221144342 its reverse (243441122), we get a palindrome (464585464).

The spelling of 221144342 in words is "two hundred twenty-one million, one hundred forty-four thousand, three hundred forty-two".