11401121144 has 16 divisors (see below), whose sum is σ = 24430974000. Its totient is φ = 4886194752.

The previous prime is 11401121099. The next prime is 11401121167. The reversal of 11401121144 is 44112110411.

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 3 ways as a sum of consecutive naturals, for example, 101795669 + ... + 101795780.

It is an arithmetic number, because the mean of its divisors is an integer number (1526935875).

Almost surely, 2^11401121144 is an apocalyptic number.

11401121144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11401121144 is an abundant number, since it is smaller than the sum of its proper divisors (13029852856).

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

11401121144 is a wasteful number, since it uses less digits than its factorization.

11401121144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203591462 (or 203591458 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11401121144 its reverse (44112110411), we get a palindrome (55513231555).

The spelling of 11401121144 in words is "eleven billion, four hundred one million, one hundred twenty-one thousand, one hundred forty-four".