2100112111212 has 12 divisors (see below), whose sum is σ = 4900261592856. Its totient is φ = 700037370400.

The previous prime is 2100112111199. The next prime is 2100112111247. The reversal of 2100112111212 is 2121112110012.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2100112111212² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2100112111191 and 2100112111200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87504671289 + ... + 87504671312.

It is an arithmetic number, because the mean of its divisors is an integer number (408355132738).

Almost surely, 2^{2100112111212} is an apocalyptic number.

It is an amenable number.

2100112111212 is an abundant number, since it is smaller than the sum of its proper divisors (2800149481644).

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

2100112111212 is a wasteful number, since it uses less digits than its factorization.

2100112111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175009342608 (or 175009342606 counting only the distinct ones).

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

Adding to 2100112111212 its reverse (2121112110012), we get a palindrome (4221224221224).

The spelling of 2100112111212 in words is "two trillion, one hundred billion, one hundred twelve million, one hundred eleven thousand, two hundred twelve".