211201123 has 6 divisors (see below), whose sum is σ = 245682996. Its totient is φ = 181029492.

The previous prime is 211201121. The next prime is 211201129. The reversal of 211201123 is 321102112.

211201123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211201123 - 2¹ = 211201121 is a prime.

It is a super-2 number, since 2×211201123² = 89211828712922258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211201121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2155065 + ... + 2155162.

It is an arithmetic number, because the mean of its divisors is an integer number (40947166).

Almost surely, 2^211201123 is an apocalyptic number.

211201123 is a deficient number, since it is larger than the sum of its proper divisors (34481873).

211201123 is an equidigital number, since it uses as much as digits as its factorization.

211201123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4310241 (or 4310234 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 211201123 is about 14532.7603365637. The cubic root of 211201123 is about 595.5232766902.

Adding to 211201123 its reverse (321102112), we get a palindrome (532303235).

The spelling of 211201123 in words is "two hundred eleven million, two hundred one thousand, one hundred twenty-three".