121220002312 has 16 divisors (see below), whose sum is σ = 227373022800. Its totient is φ = 60587196240.

The previous prime is 121220002271. The next prime is 121220002313. The reversal of 121220002312 is 213200022121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121220002313) 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, 2828014 + ... + 2870557.

It is an arithmetic number, because the mean of its divisors is an integer number (14210813925).

Almost surely, 2^121220002312 is an apocalyptic number.

It is an amenable number.

121220002312 is a deficient number, since it is larger than the sum of its proper divisors (106153020488).

121220002312 is a wasteful number, since it uses less digits than its factorization.

121220002312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5701236 (or 5701232 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 121220002312 its reverse (213200022121), we get a palindrome (334420024433).

The spelling of 121220002312 in words is "one hundred twenty-one billion, two hundred twenty million, two thousand, three hundred twelve".