221111144430 has 48 divisors (see below), whose sum is σ = 583294863312. Its totient is φ = 53602700800.

The previous prime is 221111144393. The next prime is 221111144447. The reversal of 221111144430 is 34441111122.

It is a happy number.

It is a super-2 number, since 2×221111144430² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221111144430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30452451 + ... + 30459710.

It is an arithmetic number, because the mean of its divisors is an integer number (12151976319).

Almost surely, 2^221111144430 is an apocalyptic number.

221111144430 is an abundant number, since it is smaller than the sum of its proper divisors (362183718882).

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

221111144430 is a wasteful number, since it uses less digits than its factorization.

221111144430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60912193 (or 60912182 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 221111144430 its reverse (34441111122), we get a palindrome (255552255552).

The spelling of 221111144430 in words is "two hundred twenty-one billion, one hundred eleven million, one hundred forty-four thousand, four hundred thirty".