2012122111100 has 72 divisors (see below), whose sum is σ = 4475351194608. Its totient is φ = 784986048000.

The previous prime is 2012122111067. The next prime is 2012122111141. The reversal of 2012122111100 is 11112212102.

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, 810017 + ... + 2163416.

Almost surely, 2^{2012122111100} is an apocalyptic number.

2012122111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012122111100 is an abundant number, since it is smaller than the sum of its proper divisors (2463229083508).

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

2012122111100 is a wasteful number, since it uses less digits than its factorization.

2012122111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2973615 (or 2973608 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2012122111100 its reverse (11112212102), we get a palindrome (2023234323202).

The spelling of 2012122111100 in words is "two trillion, twelve billion, one hundred twenty-two million, one hundred eleven thousand, one hundred".