221002012430 has 16 divisors (see below), whose sum is σ = 399219298704. Its totient is φ = 88086210240.

The previous prime is 221002012393. The next prime is 221002012463. The reversal of 221002012430 is 34210200122.

It is a junction number, because it is equal to n+sod(n) for n = 221002012399 and 221002012408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39321392 + ... + 39327011.

It is an arithmetic number, because the mean of its divisors is an integer number (24951206169).

Almost surely, 2^221002012430 is an apocalyptic number.

221002012430 is a deficient number, since it is larger than the sum of its proper divisors (178217286274).

221002012430 is a wasteful number, since it uses less digits than its factorization.

221002012430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78648691.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 221002012430 its reverse (34210200122), we get a palindrome (255212212552).

The spelling of 221002012430 in words is "two hundred twenty-one billion, two million, twelve thousand, four hundred thirty".