11201211121123 has 4 divisors (see below), whose sum is σ = 11203305985480. Its totient is φ = 11199116256768.

The previous prime is 11201211121091. The next prime is 11201211121157. The reversal of 11201211121123 is 32112111210211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11201211121123 - 2⁵ = 11201211121091 is a prime.

It is a super-2 number, since 2×11201211121123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11201211121123.

It is not an unprimeable number, because it can be changed into a prime (11201211121183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1047424158 + ... + 1047434851.

It is an arithmetic number, because the mean of its divisors is an integer number (2800826496370).

Almost surely, 2^{11201211121123} is an apocalyptic number.

11201211121123 is a deficient number, since it is larger than the sum of its proper divisors (2094864357).

11201211121123 is an equidigital number, since it uses as much as digits as its factorization.

11201211121123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2094864356.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 11201211121123 its reverse (32112111210211), we get a palindrome (43313322331334).

The spelling of 11201211121123 in words is "eleven trillion, two hundred one billion, two hundred eleven million, one hundred twenty-one thousand, one hundred twenty-three".