2112121111000 has 96 divisors (see below), whose sum is σ = 5216179438080. Its totient is φ = 800382600000.

The previous prime is 2112121110989. The next prime is 2112121111031. The reversal of 2112121111000 is 1111212112.

It is a happy number.

It is a super-2 number, since 2×2112121111000² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2564376 + ... + 3286375.

It is an arithmetic number, because the mean of its divisors is an integer number (54335202480).

Almost surely, 2^{2112121111000} is an apocalyptic number.

2112121111000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112121111000 is an abundant number, since it is smaller than the sum of its proper divisors (3104058327080).

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

2112121111000 is a wasteful number, since it uses less digits than its factorization.

2112121111000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5850810 (or 5850777 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2112121111000 its reverse (1111212112), we get a palindrome (2113232323112).

The spelling of 2112121111000 in words is "two trillion, one hundred twelve billion, one hundred twenty-one million, one hundred eleven thousand".