2121100103112 has 32 divisors (see below), whose sum is σ = 5329397256000. Its totient is φ = 703480434624.

The previous prime is 2121100103077. The next prime is 2121100103123. The reversal of 2121100103112 is 2113010011212.

It is a junction number, because it is equal to n+sod(n) for n = 2121100103091 and 2121100103100.

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, 222053443 + ... + 222062994.

It is an arithmetic number, because the mean of its divisors is an integer number (166543664250).

Almost surely, 2^{2121100103112} is an apocalyptic number.

It is an amenable number.

2121100103112 is an abundant number, since it is smaller than the sum of its proper divisors (3208297152888).

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

2121100103112 is a wasteful number, since it uses less digits than its factorization.

2121100103112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444116645 (or 444116641 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 2121100103112 its reverse (2113010011212), we get a palindrome (4234110114324).

The spelling of 2121100103112 in words is "two trillion, one hundred twenty-one billion, one hundred million, one hundred three thousand, one hundred twelve".