2121276212 has 24 divisors (see below), whose sum is σ = 4054065120. Its totient is φ = 963179360.

The previous prime is 2121276203. The next prime is 2121276217. The reversal of 2121276212 is 2126721212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121276217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16214 + ... + 67122.

It is an arithmetic number, because the mean of its divisors is an integer number (168919380).

Almost surely, 2^2121276212 is an apocalyptic number.

2121276212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2121276212 is a deficient number, since it is larger than the sum of its proper divisors (1932788908).

2121276212 is a wasteful number, since it uses less digits than its factorization.

2121276212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51871 (or 51869 counting only the distinct ones).

The product of its digits is 1344, while the sum is 26.

The square root of 2121276212 is about 46057.3144245298. The cubic root of 2121276212 is about 1284.8893831007.

Adding to 2121276212 its reverse (2126721212), we get a palindrome (4247997424).

The spelling of 2121276212 in words is "two billion, one hundred twenty-one million, two hundred seventy-six thousand, two hundred twelve".