121303213312 has 72 divisors (see below), whose sum is σ = 269869320000. Its totient is φ = 54079414272.

The previous prime is 121303213289. The next prime is 121303213321. The reversal of 121303213312 is 213312303121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 650812 + ... + 816187.

It is an arithmetic number, because the mean of its divisors is an integer number (3748185000).

Almost surely, 2^121303213312 is an apocalyptic number.

It is an amenable number.

121303213312 is an abundant number, since it is smaller than the sum of its proper divisors (148566106688).

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

121303213312 is a wasteful number, since it uses less digits than its factorization.

121303213312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467051 (or 1467037 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 121303213312 its reverse (213312303121), we get a palindrome (334615516433).

The spelling of 121303213312 in words is "one hundred twenty-one billion, three hundred three million, two hundred thirteen thousand, three hundred twelve".