221434040342 has 8 divisors (see below), whose sum is σ = 332424890256. Its totient is φ = 110625743592.

The previous prime is 221434040339. The next prime is 221434040353. The reversal of 221434040342 is 243040434122.

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

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, 45635258 + ... + 45640109.

It is an arithmetic number, because the mean of its divisors is an integer number (41553111282).

Almost surely, 2^221434040342 is an apocalyptic number.

221434040342 is a deficient number, since it is larger than the sum of its proper divisors (110990849914).

221434040342 is a wasteful number, since it uses less digits than its factorization.

221434040342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91276582.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 221434040342 its reverse (243040434122), we get a palindrome (464474474464).

The spelling of 221434040342 in words is "two hundred twenty-one billion, four hundred thirty-four million, forty thousand, three hundred forty-two".