221031331332 has 48 divisors (see below), whose sum is σ = 615043709952. Its totient is φ = 60406077600.

The previous prime is 221031331331. The next prime is 221031331349. The reversal of 221031331332 is 233133130122.

It is not an unprimeable number, because it can be changed into a prime (221031331331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57200794 + ... + 57204657.

It is an arithmetic number, because the mean of its divisors is an integer number (12813410624).

Almost surely, 2^221031331332 is an apocalyptic number.

It is an amenable number.

221031331332 is an abundant number, since it is smaller than the sum of its proper divisors (394012378620).

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

221031331332 is a wasteful number, since it uses less digits than its factorization.

221031331332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114405488 (or 114405486 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 221031331332 its reverse (233133130122), we get a palindrome (454164461454).

The spelling of 221031331332 in words is "two hundred twenty-one billion, thirty-one million, three hundred thirty-one thousand, three hundred thirty-two".