221311332334432 has 24 divisors (see below), whose sum is σ = 443927566395936. Its totient is φ = 108567823408512.

The previous prime is 221311332334409. The next prime is 221311332334457. The reversal of 221311332334432 is 234433233113122.

It is a junction number, because it is equal to n+sod(n) for n = 221311332334391 and 221311332334400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65245084488 + ... + 65245087879.

It is an arithmetic number, because the mean of its divisors is an integer number (18496981933164).

Almost surely, 2^{221311332334432} is an apocalyptic number.

It is an amenable number.

221311332334432 is an abundant number, since it is smaller than the sum of its proper divisors (222616234061504).

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

221311332334432 is a wasteful number, since it uses less digits than its factorization.

221311332334432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130490172430 (or 130490172422 counting only the distinct ones).

The product of its digits is 186624, while the sum is 37.

Adding to 221311332334432 its reverse (234433233113122), we get a palindrome (455744565447554).

The spelling of 221311332334432 in words is "two hundred twenty-one trillion, three hundred eleven billion, three hundred thirty-two million, three hundred thirty-four thousand, four hundred thirty-two".