2101121212 has 12 divisors (see below), whose sum is σ = 3762473176. Its totient is φ = 1026128880.

The previous prime is 2101121207. The next prime is 2101121237. The reversal of 2101121212 is 2121211012.

It is a junction number, because it is equal to n+sod(n) for n = 2101121192 and 2101121201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6107739 + ... + 6108082.

Almost surely, 2^2101121212 is an apocalyptic number.

It is an amenable number.

2101121212 is a deficient number, since it is larger than the sum of its proper divisors (1661351964).

2101121212 is a wasteful number, since it uses less digits than its factorization.

2101121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12215868 (or 12215866 counting only the distinct ones).

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

The square root of 2101121212 is about 45837.9887429630. The cubic root of 2101121212 is about 1280.8070293165.

Adding to 2101121212 its reverse (2121211012), we get a palindrome (4222332224).

The spelling of 2101121212 in words is "two billion, one hundred one million, one hundred twenty-one thousand, two hundred twelve".