221304403122 has 64 divisors (see below), whose sum is σ = 511330071168. Its totient is φ = 63107072000.

The previous prime is 221304403121. The next prime is 221304403127.

It is a happy number.

221304403122 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 221304403092 and 221304403101.

It is not an unprimeable number, because it can be changed into a prime (221304403121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9728722 + ... + 9751442.

It is an arithmetic number, because the mean of its divisors is an integer number (7989532362).

Almost surely, 2^221304403122 is an apocalyptic number.

221304403122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221304403122 is an abundant number, since it is smaller than the sum of its proper divisors (290025668046).

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

221304403122 is a wasteful number, since it uses less digits than its factorization.

221304403122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31435.

The product of its (nonzero) digits is 2304, while the sum is 24.

It can be divided in two parts, 221304 and 403122, that added together give a palindrome (624426).

The spelling of 221304403122 in words is "two hundred twenty-one billion, three hundred four million, four hundred three thousand, one hundred twenty-two".