2115501920125 has 32 divisors (see below), whose sum is σ = 2880310492800. Its totient is φ = 1538466304000.

The previous prime is 2115501920093. The next prime is 2115501920177. The reversal of 2115501920125 is 5210291055112.

It is not a de Polignac number, because 2115501920125 - 2⁵ = 2115501920093 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42791421 + ... + 42840829.

It is an arithmetic number, because the mean of its divisors is an integer number (90009702900).

Almost surely, 2^{2115501920125} is an apocalyptic number.

2115501920125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2115501920125 is a deficient number, since it is larger than the sum of its proper divisors (764808572675).

2115501920125 is a wasteful number, since it uses less digits than its factorization.

2115501920125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80574 (or 80564 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 34.

Adding to 2115501920125 its reverse (5210291055112), we get a palindrome (7325792975237).

The spelling of 2115501920125 in words is "two trillion, one hundred fifteen billion, five hundred one million, nine hundred twenty thousand, one hundred twenty-five".