221412424434 has 8 divisors (see below), whose sum is σ = 442824848880. Its totient is φ = 73804141476.

The previous prime is 221412424433. The next prime is 221412424469. The reversal of 221412424434 is 434424214122.

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

221412424434 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 221412424395 and 221412424404.

It is not an unprimeable number, because it can be changed into a prime (221412424433) 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, 18451035364 + ... + 18451035375.

It is an arithmetic number, because the mean of its divisors is an integer number (55353106110).

Almost surely, 2^221412424434 is an apocalyptic number.

221412424434 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.

221412424434 is a wasteful number, since it uses less digits than its factorization.

221412424434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36902070744.

The product of its digits is 49152, while the sum is 33.

Adding to 221412424434 its reverse (434424214122), we get a palindrome (655836638556).

The spelling of 221412424434 in words is "two hundred twenty-one billion, four hundred twelve million, four hundred twenty-four thousand, four hundred thirty-four".