121212332320 has 24 divisors (see below), whose sum is σ = 286364135484. Its totient is φ = 48484932864.

The previous prime is 121212332287. The next prime is 121212332323. The reversal of 121212332320 is 23233212121.

It can be written as a sum of positive squares in 2 ways, for example, as 116447467536 + 4764864784 = 341244^2 + 69028^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121212332291 and 121212332300.

It is not an unprimeable number, because it can be changed into a prime (121212332323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378788379 + ... + 378788698.

Almost surely, 2^121212332320 is an apocalyptic number.

121212332320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121212332320 is an abundant number, since it is smaller than the sum of its proper divisors (165151803164).

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

121212332320 is an equidigital number, since it uses as much as digits as its factorization.

121212332320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757577092 (or 757577084 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 121212332320 its reverse (23233212121), we get a palindrome (144445544441).

The spelling of 121212332320 in words is "one hundred twenty-one billion, two hundred twelve million, three hundred thirty-two thousand, three hundred twenty".