12011221562120 has 64 divisors (see below), whose sum is σ = 30763919283840. Its totient is φ = 4177816192000.

The previous prime is 12011221562113. The next prime is 12011221562173. The reversal of 12011221562120 is 2126512211021.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12011221562120.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 593429681 + ... + 593449920.

It is an arithmetic number, because the mean of its divisors is an integer number (480686238810).

Almost surely, 2^{12011221562120} is an apocalyptic number.

12011221562120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12011221562120 is an abundant number, since it is smaller than the sum of its proper divisors (18752697721720).

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

12011221562120 is a wasteful number, since it uses less digits than its factorization.

12011221562120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186879646 (or 1186879642 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 26.

Adding to 12011221562120 its reverse (2126512211021), we get a palindrome (14137733773141).

The spelling of 12011221562120 in words is "twelve trillion, eleven billion, two hundred twenty-one million, five hundred sixty-two thousand, one hundred twenty".