2102100212 has 12 divisors (see below), whose sum is σ = 3680231940. Its totient is φ = 1050605376.

The previous prime is 2102100191. The next prime is 2102100229. The reversal of 2102100212 is 2120012012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1536326416 + 565773796 = 39196^2 + 23786^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2102100193 and 2102100202.

It is a congruent number.

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, 100433 + ... + 119544.

It is an arithmetic number, because the mean of its divisors is an integer number (306685995).

Almost surely, 2^2102100212 is an apocalyptic number.

It is an amenable number.

2102100212 is a deficient number, since it is larger than the sum of its proper divisors (1578131728).

2102100212 is a wasteful number, since it uses less digits than its factorization.

2102100212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222370 (or 222368 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2102100212 is about 45848.6664146298. Note that the first 3 decimals coincide. The cubic root of 2102100212 is about 1281.0059255654.

Adding to 2102100212 its reverse (2120012012), we get a palindrome (4222112224).

The spelling of 2102100212 in words is "two billion, one hundred two million, one hundred thousand, two hundred twelve".