2100112121112 has 32 divisors (see below), whose sum is σ = 5273824174080. Its totient is φ = 696898190880.

The previous prime is 2100112121101. The next prime is 2100112121131. The reversal of 2100112121112 is 2111212110012.

It is a happy number.

It is a super-2 number, since 2×2100112121112² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2100112121091 and 2100112121100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196193464 + ... + 196204167.

It is an arithmetic number, because the mean of its divisors is an integer number (164807005440).

Almost surely, 2^{2100112121112} is an apocalyptic number.

It is an amenable number.

2100112121112 is an abundant number, since it is smaller than the sum of its proper divisors (3173712052968).

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

2100112121112 is a wasteful number, since it uses less digits than its factorization.

2100112121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392397863 (or 392397859 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 2100112121112 its reverse (2111212110012), we get a palindrome (4211324231124).

The spelling of 2100112121112 in words is "two trillion, one hundred billion, one hundred twelve million, one hundred twenty-one thousand, one hundred twelve".