2121243023 has 2 divisors, whose sum is σ = 2121243024. Its totient is φ = 2121243022.

The previous prime is 2121243013. The next prime is 2121243031. The reversal of 2121243023 is 3203421212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121243023 - 2¹² = 2121238927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121242986 and 2121243004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121243013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060621511 + 1060621512.

It is an arithmetic number, because the mean of its divisors is an integer number (1060621512).

Almost surely, 2^2121243023 is an apocalyptic number.

2121243023 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121243023 is an equidigital number, since it uses as much as digits as its factorization.

2121243023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2121243023 is about 46056.9541220433. The cubic root of 2121243023 is about 1284.8826820377.

Adding to 2121243023 its reverse (3203421212), we get a palindrome (5324664235).

The spelling of 2121243023 in words is "two billion, one hundred twenty-one million, two hundred forty-three thousand, twenty-three".