11421140020 has 48 divisors (see below), whose sum is σ = 24780389760. Its totient is φ = 4418319744.

The previous prime is 11421140011. The next prime is 11421140021. The reversal of 11421140020 is 2004112411.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11421139976 and 11421140003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421140021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77371 + ... + 169789.

It is an arithmetic number, because the mean of its divisors is an integer number (516258120).

Almost surely, 2^11421140020 is an apocalyptic number.

11421140020 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 11421140020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12390194880).

11421140020 is an abundant number, since it is smaller than the sum of its proper divisors (13359249740).

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

11421140020 is a wasteful number, since it uses less digits than its factorization.

11421140020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92632 (or 92630 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 11421140020 its reverse (2004112411), we get a palindrome (13425252431).

The spelling of 11421140020 in words is "eleven billion, four hundred twenty-one million, one hundred forty thousand, twenty".