2121323122012 has 6 divisors (see below), whose sum is σ = 3712315463528. Its totient is φ = 1060661561004.

The previous prime is 2121323121941. The next prime is 2121323122013. The reversal of 2121323122012 is 2102213231212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121323122013) by changing a digit.

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 as a sum of consecutive naturals, namely, 265165390248 + ... + 265165390255.

Almost surely, 2^{2121323122012} is an apocalyptic number.

It is an amenable number.

2121323122012 is a deficient number, since it is larger than the sum of its proper divisors (1590992341516).

2121323122012 is a wasteful number, since it uses less digits than its factorization.

2121323122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530330780507 (or 530330780505 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 2121323122012 its reverse (2102213231212), we get a palindrome (4223536353224).

The spelling of 2121323122012 in words is "two trillion, one hundred twenty-one billion, three hundred twenty-three million, one hundred twenty-two thousand, twelve".