11203121132 has 48 divisors (see below), whose sum is σ = 22861016640. Its totient is φ = 4704141312.

The previous prime is 11203121117. The next prime is 11203121161. The reversal of 11203121132 is 23112130211.

It is a super-2 number, since 2×11203121132² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11203121132.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1136288 + ... + 1146104.

It is an arithmetic number, because the mean of its divisors is an integer number (476271180).

Almost surely, 2^11203121132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11203121132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11430508320).

11203121132 is an abundant number, since it is smaller than the sum of its proper divisors (11657895508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11203121132 is a wasteful number, since it uses less digits than its factorization.

11203121132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10650 (or 10648 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11203121132 its reverse (23112130211), we get a palindrome (34315251343).

The spelling of 11203121132 in words is "eleven billion, two hundred three million, one hundred twenty-one thousand, one hundred thirty-two".