12112510155 has 8 divisors (see below), whose sum is σ = 19380016272. Its totient is φ = 6460005408.

The previous prime is 12112510153. The next prime is 12112510159. The reversal of 12112510155 is 55101521121.

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

It is not a de Polignac number, because 12112510155 - 2¹ = 12112510153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12112510153) 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, 403750324 + ... + 403750353.

It is an arithmetic number, because the mean of its divisors is an integer number (2422502034).

Almost surely, 2^12112510155 is an apocalyptic number.

12112510155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12112510155 is a deficient number, since it is larger than the sum of its proper divisors (7267506117).

12112510155 is an equidigital number, since it uses as much as digits as its factorization.

12112510155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807500685.

The product of its (nonzero) digits is 500, while the sum is 24.

The spelling of 12112510155 in words is "twelve billion, one hundred twelve million, five hundred ten thousand, one hundred fifty-five".