11233111020 has 96 divisors (see below), whose sum is σ = 33222604800. Its totient is φ = 2831431680.

The previous prime is 11233110983. The next prime is 11233111069. The reversal of 11233111020 is 2011133211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9756 + ... + 150204.

It is an arithmetic number, because the mean of its divisors is an integer number (346068800).

Almost surely, 2^11233111020 is an apocalyptic number.

11233111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11233111020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16611302400).

11233111020 is an abundant number, since it is smaller than the sum of its proper divisors (21989493780).

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

11233111020 is a wasteful number, since it uses less digits than its factorization.

11233111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140535 (or 140533 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11233111020 its reverse (2011133211), we get a palindrome (13244244231).

The spelling of 11233111020 in words is "eleven billion, two hundred thirty-three million, one hundred eleven thousand, twenty".