221424424122 has 32 divisors (see below), whose sum is σ = 483696391104. Its totient is φ = 67016566400.

The previous prime is 221424424099. The next prime is 221424424139.

221424424122 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 221424424122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1989003 + ... + 2097374.

It is an arithmetic number, because the mean of its divisors is an integer number (15115512222).

Almost surely, 2^221424424122 is an apocalyptic number.

221424424122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221424424122 is an abundant number, since it is smaller than the sum of its proper divisors (262271966982).

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

221424424122 is a wasteful number, since it uses less digits than its factorization.

221424424122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4087214.

The product of its digits is 16384, while the sum is 30.

It can be divided in two parts, 221424 and 424122, that added together give a palindrome (645546).

The spelling of 221424424122 in words is "two hundred twenty-one billion, four hundred twenty-four million, four hundred twenty-four thousand, one hundred twenty-two".