221231342 has 8 divisors (see below), whose sum is σ = 346275216. Its totient is φ = 105806272.

The previous prime is 221231341. The next prime is 221231347. The reversal of 221231342 is 243132122.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221231341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2404643 + ... + 2404734.

It is an arithmetic number, because the mean of its divisors is an integer number (43284402).

Almost surely, 2^221231342 is an apocalyptic number.

221231342 is a deficient number, since it is larger than the sum of its proper divisors (125043874).

221231342 is a wasteful number, since it uses less digits than its factorization.

221231342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4809402.

The product of its digits is 576, while the sum is 20.

The square root of 221231342 is about 14873.8475856115. The cubic root of 221231342 is about 604.8052484282.

Adding to 221231342 its reverse (243132122), we get a palindrome (464363464).

The spelling of 221231342 in words is "two hundred twenty-one million, two hundred thirty-one thousand, three hundred forty-two".