11211201123 has 16 divisors (see below), whose sum is σ = 16660609920. Its totient is φ = 6664242816.

The previous prime is 11211201109. The next prime is 11211201149. The reversal of 11211201123 is 32110211211.

It is not a de Polignac number, because 11211201123 - 2⁶ = 11211201059 is a prime.

It is a super-2 number, since 2×11211201123² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11211201103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5783965 + ... + 5785902.

It is an arithmetic number, because the mean of its divisors is an integer number (1041288120).

Almost surely, 2^11211201123 is an apocalyptic number.

11211201123 is a deficient number, since it is larger than the sum of its proper divisors (5449408797).

11211201123 is a wasteful number, since it uses less digits than its factorization.

11211201123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11569906.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11211201123 its reverse (32110211211), we get a palindrome (43321412334).

The spelling of 11211201123 in words is "eleven billion, two hundred eleven million, two hundred one thousand, one hundred twenty-three".