2121311032012 has 12 divisors (see below), whose sum is σ = 3712316624856. Its totient is φ = 1060649139200.

The previous prime is 2121311031997. The next prime is 2121311032013. The reversal of 2121311032012 is 2102301131212.

It is not an unprimeable number, because it can be changed into a prime (2121311032013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 801973 + ... + 2210380.

It is an arithmetic number, because the mean of its divisors is an integer number (309359718738).

Almost surely, 2^{2121311032012} is an apocalyptic number.

It is an amenable number.

2121311032012 is a deficient number, since it is larger than the sum of its proper divisors (1591005592844).

2121311032012 is a wasteful number, since it uses less digits than its factorization.

2121311032012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3188408 (or 3188406 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2121311032012 its reverse (2102301131212), we get a palindrome (4223612163224).

The spelling of 2121311032012 in words is "two trillion, one hundred twenty-one billion, three hundred eleven million, thirty-two thousand, twelve".