11401444220 has 24 divisors (see below), whose sum is σ = 23968196784. Its totient is φ = 4555784576.

The previous prime is 11401444139. The next prime is 11401444231. The reversal of 11401444220 is 2244410411.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280034 + ... + 318153.

It is an arithmetic number, because the mean of its divisors is an integer number (998674866).

Almost surely, 2^11401444220 is an apocalyptic number.

11401444220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11401444220 is an abundant number, since it is smaller than the sum of its proper divisors (12566752564).

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

11401444220 is a wasteful number, since it uses less digits than its factorization.

11401444220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599149 (or 599147 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 11401444220 its reverse (2244410411), we get a palindrome (13645854631).

The spelling of 11401444220 in words is "eleven billion, four hundred one million, four hundred forty-four thousand, two hundred twenty".