11201211123 has 8 divisors (see below), whose sum is σ = 14936435136. Its totient is φ = 7466730600.

The previous prime is 11201211017. The next prime is 11201211211. The reversal of 11201211123 is 32111210211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11201211123 - 2²⁵ = 11167656691 is a prime.

It is a super-2 number, since 2×11201211123² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11201211523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149713 + ... + 211698.

It is an arithmetic number, because the mean of its divisors is an integer number (1867054392).

Almost surely, 2^11201211123 is an apocalyptic number.

11201211123 is a deficient number, since it is larger than the sum of its proper divisors (3735224013).

11201211123 is a wasteful number, since it uses less digits than its factorization.

11201211123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371745.

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

Adding to 11201211123 its reverse (32111210211), we get a palindrome (43312421334).

The spelling of 11201211123 in words is "eleven billion, two hundred one million, two hundred eleven thousand, one hundred twenty-three".