11401144220 has 12 divisors (see below), whose sum is σ = 23942402904. Its totient is φ = 4560457680.

The previous prime is 11401144219. The next prime is 11401144243. The reversal of 11401144220 is 2244110411.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 570057211 = 11401144220 / (1 + 1 + 4 + 0 + 1 + 1 + 4 + 4 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 11401144192 and 11401144201.

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, 285028586 + ... + 285028625.

It is an arithmetic number, because the mean of its divisors is an integer number (1995200242).

Almost surely, 2^11401144220 is an apocalyptic number.

11401144220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11401144220 is an abundant number, since it is smaller than the sum of its proper divisors (12541258684).

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

11401144220 is a wasteful number, since it uses less digits than its factorization.

11401144220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570057220 (or 570057218 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 11401144220 its reverse (2244110411), we get a palindrome (13645254631).

The spelling of 11401144220 in words is "eleven billion, four hundred one million, one hundred forty-four thousand, two hundred twenty".