221034024420 has 96 divisors (see below), whose sum is σ = 696937844736. Its totient is φ = 51855484800.

The previous prime is 221034024413. The next prime is 221034024473. The reversal of 221034024420 is 24420430122.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5381154 + ... + 5422073.

It is an arithmetic number, because the mean of its divisors is an integer number (7259769216).

Almost surely, 2^221034024420 is an apocalyptic number.

221034024420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221034024420 is an abundant number, since it is smaller than the sum of its proper divisors (475903820316).

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

221034024420 is a wasteful number, since it uses less digits than its factorization.

221034024420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10803281 (or 10803279 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 221034024420 its reverse (24420430122), we get a palindrome (245454454542).

The spelling of 221034024420 in words is "two hundred twenty-one billion, thirty-four million, twenty-four thousand, four hundred twenty".