121332222 has 128 divisors (see below), whose sum is σ = 313528320. Its totient is φ = 34420320.

The previous prime is 121332217. The next prime is 121332223. The reversal of 121332222 is 222233121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 121332195 and 121332204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121332223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1133893 + ... + 1133999.

It is an arithmetic number, because the mean of its divisors is an integer number (2449440).

Almost surely, 2^121332222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121332222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156764160).

121332222 is an abundant number, since it is smaller than the sum of its proper divisors (192196098).

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

121332222 is a wasteful number, since it uses less digits than its factorization.

121332222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 229 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 121332222 is about 11015.0906487418. The cubic root of 121332222 is about 495.0610025829.

Adding to 121332222 its reverse (222233121), we get a palindrome (343565343).

The spelling of 121332222 in words is "one hundred twenty-one million, three hundred thirty-two thousand, two hundred twenty-two".