12101111000 has 64 divisors (see below), whose sum is σ = 30890864160. Its totient is φ = 4400400000.

The previous prime is 12101110991. The next prime is 12101111017. The reversal of 12101111000 is 11110121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

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, 539051 + ... + 561050.

Almost surely, 2^12101111000 is an apocalyptic number.

12101111000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12101111000 is an abundant number, since it is smaller than the sum of its proper divisors (18789753160).

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

12101111000 is a wasteful number, since it uses less digits than its factorization.

12101111000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100133 (or 1100119 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 12101111000 its reverse (11110121), we get a palindrome (12112221121).

The spelling of 12101111000 in words is "twelve billion, one hundred one million, one hundred eleven thousand".