12121040410512 has 80 divisors (see below), whose sum is σ = 34195753123392. Its totient is φ = 3669122396160.

The previous prime is 12121040410499. The next prime is 12121040410519. The reversal of 12121040410512 is 21501404012121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (12121040410519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11755273 + ... + 12744744.

Almost surely, 2^{12121040410512} is an apocalyptic number.

12121040410512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12121040410512 is an abundant number, since it is smaller than the sum of its proper divisors (22074712712880).

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

12121040410512 is a wasteful number, since it uses less digits than its factorization.

12121040410512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24500976 (or 24500970 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 24.

Adding to 12121040410512 its reverse (21501404012121), we get a palindrome (33622444422633).

The spelling of 12121040410512 in words is "twelve trillion, one hundred twenty-one billion, forty million, four hundred ten thousand, five hundred twelve".