221416124430 has 16 divisors (see below), whose sum is σ = 531398698704. Its totient is φ = 59044299840.

The previous prime is 221416124429. The next prime is 221416124441. The reversal of 221416124430 is 34421614122.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 7380537481 = 221416124430 / (2 + 2 + 1 + 4 + 1 + 6 + 1 + 2 + 4 + 4 + 3 + 0).

It is a Curzon number.

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, 3690268711 + ... + 3690268770.

It is an arithmetic number, because the mean of its divisors is an integer number (33212418669).

Almost surely, 2^221416124430 is an apocalyptic number.

221416124430 is an abundant number, since it is smaller than the sum of its proper divisors (309982574274).

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

221416124430 is a wasteful number, since it uses less digits than its factorization.

221416124430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7380537491.

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 221416124430 its reverse (34421614122), we get a palindrome (255837738552).

The spelling of 221416124430 in words is "two hundred twenty-one billion, four hundred sixteen million, one hundred twenty-four thousand, four hundred thirty".