21230023022311 has 2 divisors, whose sum is σ = 21230023022312. Its totient is φ = 21230023022310.

The previous prime is 21230023022291. The next prime is 21230023022371. The reversal of 21230023022311 is 11322032003212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21230023022311 - 2²³ = 21230014633703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21230023022371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10615011511155 + 10615011511156.

It is an arithmetic number, because the mean of its divisors is an integer number (10615011511156).

Almost surely, 2^{21230023022311} is an apocalyptic number.

21230023022311 is a deficient number, since it is larger than the sum of its proper divisors (1).

21230023022311 is an equidigital number, since it uses as much as digits as its factorization.

21230023022311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21230023022311 its reverse (11322032003212), we get a palindrome (32552055025523).

The spelling of 21230023022311 in words is "twenty-one trillion, two hundred thirty billion, twenty-three million, twenty-two thousand, three hundred eleven".