221134214434 has 16 divisors (see below), whose sum is σ = 379597454208. Its totient is φ = 94644248832.

The previous prime is 221134214387. The next prime is 221134214453. The reversal of 221134214434 is 434412431122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221134214396 and 221134214405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10619007 + ... + 10639810.

It is an arithmetic number, because the mean of its divisors is an integer number (23724840888).

Almost surely, 2^221134214434 is an apocalyptic number.

221134214434 is a deficient number, since it is larger than the sum of its proper divisors (158463239774).

221134214434 is a wasteful number, since it uses less digits than its factorization.

221134214434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21259569.

The product of its digits is 18432, while the sum is 31.

Adding to 221134214434 its reverse (434412431122), we get a palindrome (655546645556).

The spelling of 221134214434 in words is "two hundred twenty-one billion, one hundred thirty-four million, two hundred fourteen thousand, four hundred thirty-four".