2021111112323 has 2 divisors, whose sum is σ = 2021111112324. Its totient is φ = 2021111112322.

The previous prime is 2021111112199. The next prime is 2021111112353. The reversal of 2021111112323 is 3232111111202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021111112323 - 2¹⁸ = 2021110850179 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021111112295 and 2021111112304.

It is not a weakly prime, because it can be changed into another prime (2021111112353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010555556161 + 1010555556162.

It is an arithmetic number, because the mean of its divisors is an integer number (1010555556162).

Almost surely, 2^{2021111112323} is an apocalyptic number.

2021111112323 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021111112323 is an equidigital number, since it uses as much as digits as its factorization.

2021111112323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 2021111112323 its reverse (3232111111202), we get a palindrome (5253222223525).

The spelling of 2021111112323 in words is "two trillion, twenty-one billion, one hundred eleven million, one hundred twelve thousand, three hundred twenty-three".