2121020121323 has 2 divisors, whose sum is σ = 2121020121324. Its totient is φ = 2121020121322.

The previous prime is 2121020121287. The next prime is 2121020121329. The reversal of 2121020121323 is 3231210201212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121020121323 - 2¹⁰ = 2121020120299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121020121295 and 2121020121304.

It is not a weakly prime, because it can be changed into another prime (2121020121329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060510060661 + 1060510060662.

It is an arithmetic number, because the mean of its divisors is an integer number (1060510060662).

Almost surely, 2^{2121020121323} is an apocalyptic number.

2121020121323 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121020121323 is an equidigital number, since it uses as much as digits as its factorization.

2121020121323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2121020121323 its reverse (3231210201212), we get a palindrome (5352230322535).

The spelling of 2121020121323 in words is "two trillion, one hundred twenty-one billion, twenty million, one hundred twenty-one thousand, three hundred twenty-three".