211211031023 has 2 divisors, whose sum is σ = 211211031024. Its totient is φ = 211211031022.

The previous prime is 211211030951. The next prime is 211211031037. The reversal of 211211031023 is 320130112112.

211211031023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211211031023 - 2¹² = 211211026927 is a prime.

It is a super-2 number, since 2×211211031023² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211211030992 and 211211031010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211211031223) 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, 105605515511 + 105605515512.

It is an arithmetic number, because the mean of its divisors is an integer number (105605515512).

Almost surely, 2^211211031023 is an apocalyptic number.

211211031023 is a deficient number, since it is larger than the sum of its proper divisors (1).

211211031023 is an equidigital number, since it uses as much as digits as its factorization.

211211031023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 211211031023 its reverse (320130112112), we get a palindrome (531341143135).

The spelling of 211211031023 in words is "two hundred eleven billion, two hundred eleven million, thirty-one thousand, twenty-three".