2121100202212 has 48 divisors (see below), whose sum is σ = 3912444043200. Its totient is φ = 1003407246720.

The previous prime is 2121100202189. The next prime is 2121100202297. The reversal of 2121100202212 is 2122020011212.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 225141262 + ... + 225150682.

It is an arithmetic number, because the mean of its divisors is an integer number (81509250900).

Almost surely, 2^{2121100202212} is an apocalyptic number.

It is an amenable number.

2121100202212 is a deficient number, since it is larger than the sum of its proper divisors (1791343840988).

2121100202212 is a wasteful number, since it uses less digits than its factorization.

2121100202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13036 (or 13034 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2121100202212 its reverse (2122020011212), we get a palindrome (4243120213424).

The spelling of 2121100202212 in words is "two trillion, one hundred twenty-one billion, one hundred million, two hundred two thousand, two hundred twelve".