121220232 has 128 divisors (see below), whose sum is σ = 362880000. Its totient is φ = 33014016.

The previous prime is 121220213. The next prime is 121220243. The reversal of 121220232 is 232022121.

It is a happy number.

It is a super-2 number, since 2×121220232² = 29388689292267648, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 677119 + ... + 677297.

It is an arithmetic number, because the mean of its divisors is an integer number (2835000).

Almost surely, 2^121220232 is an apocalyptic number.

121220232 is a gapful number since it is divisible by the number (12) 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 121220232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181440000).

121220232 is an abundant number, since it is smaller than the sum of its proper divisors (241659768).

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

121220232 is a wasteful number, since it uses less digits than its factorization.

121220232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 121220232 is about 11010.0059945488. The cubic root of 121220232 is about 494.9086414398.

Adding to 121220232 its reverse (232022121), we get a palindrome (353242353).

The spelling of 121220232 in words is "one hundred twenty-one million, two hundred twenty thousand, two hundred thirty-two".