12112121000 has 64 divisors (see below), whose sum is σ = 32391290880. Its totient is φ = 4152724800.

The previous prime is 12112120997. The next prime is 12112121017. The reversal of 12112121000 is 12121121.

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, 858152 + ... + 872151.

It is an arithmetic number, because the mean of its divisors is an integer number (506113920).

Almost surely, 2^12112121000 is an apocalyptic number.

12112121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112121000 is an abundant number, since it is smaller than the sum of its proper divisors (20279169880).

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

12112121000 is a wasteful number, since it uses less digits than its factorization.

12112121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730331 (or 1730317 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12112121000 its reverse (12121121), we get a palindrome (12124242121).

The spelling of 12112121000 in words is "twelve billion, one hundred twelve million, one hundred twenty-one thousand".