11213013440 has 28 divisors (see below), whose sum is σ = 26700989016. Its totient is φ = 4485205248.

The previous prime is 11213013439. The next prime is 11213013451. The reversal of 11213013440 is 4431031211.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17520014 + ... + 17520653.

Almost surely, 2^11213013440 is an apocalyptic number.

11213013440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11213013440 is an abundant number, since it is smaller than the sum of its proper divisors (15487975576).

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

11213013440 is an equidigital number, since it uses as much as digits as its factorization.

11213013440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35040684 (or 35040674 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 11213013440 its reverse (4431031211), we get a palindrome (15644044651).

The spelling of 11213013440 in words is "eleven billion, two hundred thirteen million, thirteen thousand, four hundred forty".