2100100012 has 12 divisors (see below), whose sum is σ = 3681376776. Its totient is φ = 1048278080.

The previous prime is 2100099979. The next prime is 2100100033. The reversal of 2100100012 is 2100010012.

It is a junction number, because it is equal to n+sod(n) for n = 2100099968 and 2100100004.

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, 440314 + ... + 445057.

It is an arithmetic number, because the mean of its divisors is an integer number (306781398).

Almost surely, 2^2100100012 is an apocalyptic number.

It is an amenable number.

2100100012 is a deficient number, since it is larger than the sum of its proper divisors (1581276764).

2100100012 is a wasteful number, since it uses less digits than its factorization.

2100100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885968 (or 885966 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 2100100012 is about 45826.8481569483. The cubic root of 2100100012 is about 1280.5994937574.

Adding to 2100100012 its reverse (2100010012), we get a palindrome (4200110024).

Subtracting from 2100100012 its reverse (2100010012), we obtain a square (90000 = 300²).

The spelling of 2100100012 in words is "two billion, one hundred million, one hundred thousand, twelve".