11420111420 has 96 divisors (see below), whose sum is σ = 26173046592. Its totient is φ = 4168101888.

The previous prime is 11420111387. The next prime is 11420111431. The reversal of 11420111420 is 2411102411.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

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, 3860582 + ... + 3863538.

It is an arithmetic number, because the mean of its divisors is an integer number (272635902).

Almost surely, 2^11420111420 is an apocalyptic number.

11420111420 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 11420111420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13086523296).

11420111420 is an abundant number, since it is smaller than the sum of its proper divisors (14752935172).

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

11420111420 is a wasteful number, since it uses less digits than its factorization.

11420111420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3327 (or 3325 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11420111420 its reverse (2411102411), we get a palindrome (13831213831).

Subtracting from 11420111420 its reverse (2411102411), we obtain a palindrome (9009009009).

The spelling of 11420111420 in words is "eleven billion, four hundred twenty million, one hundred eleven thousand, four hundred twenty".