120012515620 has 24 divisors (see below), whose sum is σ = 252061826688. Its totient is φ = 47998236000.

The previous prime is 120012515587. The next prime is 120012515657. The reversal of 120012515620 is 26515210021.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276546 + ... + 562585.

It is an arithmetic number, because the mean of its divisors is an integer number (10502576112).

Almost surely, 2^120012515620 is an apocalyptic number.

120012515620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120012515620 is an abundant number, since it is smaller than the sum of its proper divisors (132049311068).

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

120012515620 is a wasteful number, since it uses less digits than its factorization.

120012515620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846291 (or 846289 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 120012515620 its reverse (26515210021), we get a palindrome (146527725641).

The spelling of 120012515620 in words is "one hundred twenty billion, twelve million, five hundred fifteen thousand, six hundred twenty".