12115121503 has 8 divisors (see below), whose sum is σ = 12374273072. Its totient is φ = 11858273856.

The previous prime is 12115121471. The next prime is 12115121507. The reversal of 12115121503 is 30512151121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12115121503 - 2⁵ = 12115121471 is a prime.

It is a super-3 number, since 3×12115121503³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12115121507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565350 + ... + 586387.

It is an arithmetic number, because the mean of its divisors is an integer number (1546784134).

Almost surely, 2^12115121503 is an apocalyptic number.

12115121503 is a deficient number, since it is larger than the sum of its proper divisors (259151569).

12115121503 is a wasteful number, since it uses less digits than its factorization.

12115121503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151961.

The product of its (nonzero) digits is 300, while the sum is 22.

Adding to 12115121503 its reverse (30512151121), we get a palindrome (42627272624).

The spelling of 12115121503 in words is "twelve billion, one hundred fifteen million, one hundred twenty-one thousand, five hundred three".