12112001021000 has 64 divisors (see below), whose sum is σ = 28463722775280. Its totient is φ = 4824007180800.

The previous prime is 12112001020961. The next prime is 12112001021017. The reversal of 12112001021000 is 12010021121.

It can be written as a sum of positive squares in 8 ways, for example, as 950348120164 + 11161652900836 = 974858^2 + 3340906^2 .

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, 25758419 + ... + 26224418.

Almost surely, 2^{12112001021000} is an apocalyptic number.

12112001021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12112001021000 is an abundant number, since it is smaller than the sum of its proper divisors (16351721754280).

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

12112001021000 is a wasteful number, since it uses less digits than its factorization.

12112001021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51983091 (or 51983077 counting only the distinct ones).

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

Adding to 12112001021000 its reverse (12010021121), we get a palindrome (12124011042121).

The spelling of 12112001021000 in words is "twelve trillion, one hundred twelve billion, one million, twenty-one thousand".