111012011002100 has 144 divisors (see below), whose sum is σ = 260072350137600. Its totient is φ = 40887132894720.

The previous prime is 111012011002099. The next prime is 111012011002181. The reversal of 111012011002100 is 1200110210111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 890048942 + ... + 890173658.

Almost surely, 2^{111012011002100} is an apocalyptic number.

111012011002100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111012011002100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130036175068800).

111012011002100 is an abundant number, since it is smaller than the sum of its proper divisors (149060339135500).

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

111012011002100 is a wasteful number, since it uses less digits than its factorization.

111012011002100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126442 (or 126435 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111012011002100 its reverse (1200110210111), we get a palindrome (112212121212211).

The spelling of 111012011002100 in words is "one hundred eleven trillion, twelve billion, eleven million, two thousand, one hundred".