144400121011 has 16 divisors (see below), whose sum is σ = 155750031360. Its totient is φ = 133427027520.

The previous prime is 144400121009. The next prime is 144400121023. The reversal of 144400121011 is 110121004441.

It is a cyclic number.

It is not a de Polignac number, because 144400121011 - 2¹ = 144400121009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144400121011.

It is not an unprimeable number, because it can be changed into a prime (144400521011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3066930 + ... + 3113656.

It is an arithmetic number, because the mean of its divisors is an integer number (9734376960).

Almost surely, 2^144400121011 is an apocalyptic number.

144400121011 is a deficient number, since it is larger than the sum of its proper divisors (11349910349).

144400121011 is a wasteful number, since it uses less digits than its factorization.

144400121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50754.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 144400121011 its reverse (110121004441), we get a palindrome (254521125452).

The spelling of 144400121011 in words is "one hundred forty-four billion, four hundred million, one hundred twenty-one thousand, eleven".