11123021031000 has 128 divisors (see below), whose sum is σ = 34708210430400. Its totient is φ = 2965764172800.

The previous prime is 11123021030987. The next prime is 11123021031007. The reversal of 11123021031000 is 13012032111.

It is a happy number.

It is a super-2 number, since 2×11123021031000² (a number of 27 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123021031007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23928796 + ... + 24389204.

Almost surely, 2^{11123021031000} is an apocalyptic number.

11123021031000 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 11123021031000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17354105215200).

11123021031000 is an abundant number, since it is smaller than the sum of its proper divisors (23585189399400).

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

11123021031000 is a wasteful number, since it uses less digits than its factorization.

11123021031000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468486 (or 468472 counting only the distinct ones).

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

Adding to 11123021031000 its reverse (13012032111), we get a palindrome (11136033063111).

The spelling of 11123021031000 in words is "eleven trillion, one hundred twenty-three billion, twenty-one million, thirty-one thousand".