221141430 has 24 divisors (see below), whose sum is σ = 574967952. Its totient is φ = 58971024.

The previous prime is 221141377. The next prime is 221141467. The reversal of 221141430 is 34141122.

221141430 is a `hidden beast` number, since 221 + 1 + 414 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1228474 + ... + 1228653.

It is an arithmetic number, because the mean of its divisors is an integer number (23956998).

Almost surely, 2^221141430 is an apocalyptic number.

221141430 is an abundant number, since it is smaller than the sum of its proper divisors (353826522).

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

221141430 is a wasteful number, since it uses less digits than its factorization.

221141430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2457140 (or 2457137 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 221141430 is about 14870.8247921896. The cubic root of 221141430 is about 604.7233031101.

Adding to 221141430 its reverse (34141122), we get a palindrome (255282552).

The spelling of 221141430 in words is "two hundred twenty-one million, one hundred forty-one thousand, four hundred thirty".