211101001123 has 2 divisors, whose sum is σ = 211101001124. Its totient is φ = 211101001122.

The previous prime is 211101001091. The next prime is 211101001141. The reversal of 211101001123 is 321100101112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211101001123 - 2⁵ = 211101001091 is a prime.

It is a super-2 number, since 2×211101001123² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211101001183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105550500561 + 105550500562.

It is an arithmetic number, because the mean of its divisors is an integer number (105550500562).

Almost surely, 2^211101001123 is an apocalyptic number.

211101001123 is a deficient number, since it is larger than the sum of its proper divisors (1).

211101001123 is an equidigital number, since it uses as much as digits as its factorization.

211101001123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 211101001123 its reverse (321100101112), we get a palindrome (532201102235).

The spelling of 211101001123 in words is "two hundred eleven billion, one hundred one million, one thousand, one hundred twenty-three".