221222024232 has 96 divisors (see below), whose sum is σ = 608708399040. Its totient is φ = 66948217600.

The previous prime is 221222024209. The next prime is 221222024239. The reversal of 221222024232 is 232420222122.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (221222024239) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2159893 + ... + 2259995.

It is an arithmetic number, because the mean of its divisors is an integer number (6340712490).

Almost surely, 2^221222024232 is an apocalyptic number.

221222024232 is a gapful number since it is divisible by the number (22) 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 221222024232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304354199520).

221222024232 is an abundant number, since it is smaller than the sum of its proper divisors (387486374808).

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

221222024232 is a wasteful number, since it uses less digits than its factorization.

221222024232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100895 (or 100880 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 221222024232 its reverse (232420222122), we get a palindrome (453642246354).

The spelling of 221222024232 in words is "two hundred twenty-one billion, two hundred twenty-two million, twenty-four thousand, two hundred thirty-two".