2121242010044 has 12 divisors (see below), whose sum is σ = 3715075929600. Its totient is φ = 1059791744448.

The previous prime is 2121242010037. The next prime is 2121242010047. The reversal of 2121242010044 is 4400102421212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121242010047) 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 in 3 ways as a sum of consecutive naturals, for example, 207309389 + ... + 207319620.

It is an arithmetic number, because the mean of its divisors is an integer number (309589660800).

Almost surely, 2^{2121242010044} is an apocalyptic number.

It is an amenable number.

2121242010044 is a deficient number, since it is larger than the sum of its proper divisors (1593833919556).

2121242010044 is a wasteful number, since it uses less digits than its factorization.

2121242010044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414630292 (or 414630290 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 2121242010044 its reverse (4400102421212), we get a palindrome (6521344431256).

The spelling of 2121242010044 in words is "two trillion, one hundred twenty-one billion, two hundred forty-two million, ten thousand, forty-four".