2121121212276 has 48 divisors (see below), whose sum is σ = 5399344052928. Its totient is φ = 642748953600.

The previous prime is 2121121212209. The next prime is 2121121212277. The reversal of 2121121212276 is 6722121211212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121121212277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6320406 + ... + 6647538.

It is an arithmetic number, because the mean of its divisors is an integer number (112486334436).

Almost surely, 2^{2121121212276} is an apocalyptic number.

It is an amenable number.

2121121212276 is an abundant number, since it is smaller than the sum of its proper divisors (3278222840652).

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

2121121212276 is a wasteful number, since it uses less digits than its factorization.

2121121212276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376272 (or 376270 counting only the distinct ones).

The product of its digits is 2688, while the sum is 30.

Adding to 2121121212276 its reverse (6722121211212), we get a palindrome (8843242423488).

The spelling of 2121121212276 in words is "two trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred twelve thousand, two hundred seventy-six".