221340214434 has 8 divisors (see below), whose sum is σ = 442680428880. Its totient is φ = 73780071476.

The previous prime is 221340214399. The next prime is 221340214451. The reversal of 221340214434 is 434412043122.

221340214434 is digitally balanced in base 7, 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.

221340214434 is an admirable 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, 18445017864 + ... + 18445017875.

It is an arithmetic number, because the mean of its divisors is an integer number (55335053610).

Almost surely, 2^221340214434 is an apocalyptic number.

221340214434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221340214434 is a wasteful number, since it uses less digits than its factorization.

221340214434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36890035744.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 221340214434 its reverse (434412043122), we get a palindrome (655752257556).

The spelling of 221340214434 in words is "two hundred twenty-one billion, three hundred forty million, two hundred fourteen thousand, four hundred thirty-four".