221122231120 has 160 divisors (see below), whose sum is σ = 591331295232. Its totient is φ = 75327515136.

The previous prime is 221122231103. The next prime is 221122231159. The reversal of 221122231120 is 21132221122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60696019 + ... + 60699661.

Almost surely, 2^221122231120 is an apocalyptic number.

221122231120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 221122231120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295665647616).

221122231120 is an abundant number, since it is smaller than the sum of its proper divisors (370209064112).

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

221122231120 is a wasteful number, since it uses less digits than its factorization.

221122231120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4329 (or 4323 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 221122231120 its reverse (21132221122), we get a palindrome (242254452242).

The spelling of 221122231120 in words is "two hundred twenty-one billion, one hundred twenty-two million, two hundred thirty-one thousand, one hundred twenty".