144136223121 has 16 divisors (see below), whose sum is σ = 211688156160. Its totient is φ = 86507175120.

The previous prime is 144136223111. The next prime is 144136223123. The reversal of 144136223121 is 121322631441.

It is not a de Polignac number, because 144136223121 - 2¹⁴ = 144136206737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144136223123) 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, 21199341 + ... + 21206138.

It is an arithmetic number, because the mean of its divisors is an integer number (13230509760).

Almost surely, 2^144136223121 is an apocalyptic number.

144136223121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144136223121 is a deficient number, since it is larger than the sum of its proper divisors (67551933039).

144136223121 is a wasteful number, since it uses less digits than its factorization.

144136223121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42405596.

The product of its digits is 6912, while the sum is 30.

Adding to 144136223121 its reverse (121322631441), we get a palindrome (265458854562).

The spelling of 144136223121 in words is "one hundred forty-four billion, one hundred thirty-six million, two hundred twenty-three thousand, one hundred twenty-one".