121303212 has 12 divisors (see below), whose sum is σ = 283040856. Its totient is φ = 40434400.

The previous prime is 121303181. The next prime is 121303223. The reversal of 121303212 is 212303121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 121303191 and 121303200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5054289 + ... + 5054312.

It is an arithmetic number, because the mean of its divisors is an integer number (23586738).

Almost surely, 2^121303212 is an apocalyptic number.

121303212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121303212 is an abundant number, since it is smaller than the sum of its proper divisors (161737644).

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

121303212 is a wasteful number, since it uses less digits than its factorization.

121303212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10108608 (or 10108606 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 121303212 is about 11013.7737401855. The cubic root of 121303212 is about 495.0215438027.

Adding to 121303212 its reverse (212303121), we get a palindrome (333606333).

Subtracting 121303212 from its reverse (212303121), we obtain a palindrome (90999909).

The spelling of 121303212 in words is "one hundred twenty-one million, three hundred three thousand, two hundred twelve".