2102100012 has 60 divisors (see below), whose sum is σ = 5629372056. Its totient is φ = 683605440.

The previous prime is 2102100001. The next prime is 2102100037. The reversal of 2102100012 is 2100012012.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2102099967 and 2102100003.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 65838 + ... + 92405.

Almost surely, 2^2102100012 is an apocalyptic number.

It is an amenable number.

2102100012 is an abundant number, since it is smaller than the sum of its proper divisors (3527272044).

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

2102100012 is a wasteful number, since it uses less digits than its factorization.

2102100012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158300 (or 158289 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2102100012 is about 45848.6642335412. The cubic root of 2102100012 is about 1281.0058849392.

Adding to 2102100012 its reverse (2100012012), we get a palindrome (4202112024).

The spelling of 2102100012 in words is "two billion, one hundred two million, one hundred thousand, twelve".