2100012021112 has 16 divisors (see below), whose sum is σ = 3937625673840. Its totient is φ = 1049978508096.

The previous prime is 2100012021083. The next prime is 2100012021127. The reversal of 2100012021112 is 2111202100012.

It is a junction number, because it is equal to n+sod(n) for n = 2100012021092 and 2100012021101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3111468 + ... + 3725755.

It is an arithmetic number, because the mean of its divisors is an integer number (246101604615).

Almost surely, 2^{2100012021112} is an apocalyptic number.

It is an amenable number.

2100012021112 is a deficient number, since it is larger than the sum of its proper divisors (1837613652728).

2100012021112 is a wasteful number, since it uses less digits than its factorization.

2100012021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6875622 (or 6875618 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2100012021112 its reverse (2111202100012), we get a palindrome (4211214121124).

The spelling of 2100012021112 in words is "two trillion, one hundred billion, twelve million, twenty-one thousand, one hundred twelve".