121342522512 has 20 divisors (see below), whose sum is σ = 313468183280. Its totient is φ = 40447507488.

The previous prime is 121342522471. The next prime is 121342522579. The reversal of 121342522512 is 215225243121.

It is a self number, because there is not a number n which added to its sum of digits gives 121342522512.

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, 1263984562 + ... + 1263984657.

It is an arithmetic number, because the mean of its divisors is an integer number (15673409164).

Almost surely, 2^121342522512 is an apocalyptic number.

121342522512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121342522512 is an abundant number, since it is smaller than the sum of its proper divisors (192125660768).

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

121342522512 is a wasteful number, since it uses less digits than its factorization.

121342522512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527969230 (or 2527969224 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

Adding to 121342522512 its reverse (215225243121), we get a palindrome (336567765633).

The spelling of 121342522512 in words is "one hundred twenty-one billion, three hundred forty-two million, five hundred twenty-two thousand, five hundred twelve".