221430430334 has 4 divisors (see below), whose sum is σ = 332145645504. Its totient is φ = 110715215166.

The previous prime is 221430430237. The next prime is 221430430343. The reversal of 221430430334 is 433034034122.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 221430430297 and 221430430306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55357607582 + ... + 55357607585.

It is an arithmetic number, because the mean of its divisors is an integer number (83036411376).

Almost surely, 2^221430430334 is an apocalyptic number.

221430430334 is a deficient number, since it is larger than the sum of its proper divisors (110715215170).

221430430334 is a wasteful number, since it uses less digits than its factorization.

221430430334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110715215169.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 221430430334 its reverse (433034034122), we get a palindrome (654464464456).

The spelling of 221430430334 in words is "two hundred twenty-one billion, four hundred thirty million, four hundred thirty thousand, three hundred thirty-four".