2121002213023 has 16 divisors (see below), whose sum is σ = 2190859456896. Its totient is φ = 2052082620000.

The previous prime is 2121002213021. The next prime is 2121002213039. The reversal of 2121002213023 is 3203122001212.

It is a cyclic number.

It is not a de Polignac number, because 2121002213023 - 2¹ = 2121002213021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121002213021) 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, 51745365 + ... + 51786337.

It is an arithmetic number, because the mean of its divisors is an integer number (136928716056).

Almost surely, 2^{2121002213023} is an apocalyptic number.

2121002213023 is a deficient number, since it is larger than the sum of its proper divisors (69857243873).

2121002213023 is a wasteful number, since it uses less digits than its factorization.

2121002213023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52374.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 2121002213023 its reverse (3203122001212), we get a palindrome (5324124214235).

The spelling of 2121002213023 in words is "two trillion, one hundred twenty-one billion, two million, two hundred thirteen thousand, twenty-three".