2121242010043 has 16 divisors (see below), whose sum is σ = 2288445458656. Its totient is φ = 1954617350400.

The previous prime is 2121242010037. The next prime is 2121242010047. The reversal of 2121242010043 is 3400102421212.

It is not a de Polignac number, because 2121242010043 - 2²⁹ = 2120705139131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121242009996 and 2121242010023.

It is not an unprimeable number, because it can be changed into a prime (2121242010047) 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, 17639068 + ... + 17758918.

It is an arithmetic number, because the mean of its divisors is an integer number (143027841166).

Almost surely, 2^{2121242010043} is an apocalyptic number.

2121242010043 is a deficient number, since it is larger than the sum of its proper divisors (167203448613).

2121242010043 is a wasteful number, since it uses less digits than its factorization.

2121242010043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122254.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 2121242010043 its reverse (3400102421212), we get a palindrome (5521344431255).

The spelling of 2121242010043 in words is "two trillion, one hundred twenty-one billion, two hundred forty-two million, ten thousand, forty-three".