11444122420 has 48 divisors (see below), whose sum is σ = 25231570560. Its totient is φ = 4351729536.

The previous prime is 11444122337. The next prime is 11444122421. The reversal of 11444122420 is 2422144411.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11444122421) 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, 1335 + ... + 151294.

It is an arithmetic number, because the mean of its divisors is an integer number (525657720).

Almost surely, 2^11444122420 is an apocalyptic number.

11444122420 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 11444122420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12615785280).

11444122420 is an abundant number, since it is smaller than the sum of its proper divisors (13787448140).

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

11444122420 is a wasteful number, since it uses less digits than its factorization.

11444122420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152824 (or 152822 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 11444122420 its reverse (2422144411), we get a palindrome (13866266831).

The spelling of 11444122420 in words is "eleven billion, four hundred forty-four million, one hundred twenty-two thousand, four hundred twenty".