222120221232 has 160 divisors (see below), whose sum is σ = 706699768320. Its totient is φ = 58542059520.

The previous prime is 222120221209. The next prime is 222120221243. The reversal of 222120221232 is 232122021222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 222120221199 and 222120221208.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6845944 + ... + 6878312.

It is an arithmetic number, because the mean of its divisors is an integer number (4416873552).

Almost surely, 2^222120221232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222120221232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353349884160).

222120221232 is an abundant number, since it is smaller than the sum of its proper divisors (484579547088).

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

222120221232 is a wasteful number, since it uses less digits than its factorization.

222120221232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33971 (or 33965 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 222120221232 its reverse (232122021222), we get a palindrome (454242242454).

The spelling of 222120221232 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred twenty-one thousand, two hundred thirty-two".