211112507 has 2 divisors, whose sum is σ = 211112508. Its totient is φ = 211112506.

The previous prime is 211112483. The next prime is 211112509. The reversal of 211112507 is 705211112.

It is a happy number.

211112507 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 211112507 - 2²⁴ = 194335291 is a prime.

It is a super-2 number, since 2×211112507² = 89136981223650098, which contains 22 as substring.

Together with 211112509, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (211112509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105556253 + 105556254.

It is an arithmetic number, because the mean of its divisors is an integer number (105556254).

Almost surely, 2^211112507 is an apocalyptic number.

211112507 is a deficient number, since it is larger than the sum of its proper divisors (1).

211112507 is an equidigital number, since it uses as much as digits as its factorization.

211112507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 211112507 is about 14529.7111808873. The cubic root of 211112507 is about 595.4399749342.

Adding to 211112507 its reverse (705211112), we get a palindrome (916323619).

The spelling of 211112507 in words is "two hundred eleven million, one hundred twelve thousand, five hundred seven".