144312123012021 has 12 divisors (see below), whose sum is σ = 208604004430380. Its totient is φ = 96137392740480.

The previous prime is 144312123011971. The next prime is 144312123012023. The reversal of 144312123012021 is 120210321213441.

144312123012021 is a `hidden beast` number, since 1 + 4 + 4 + 312 + 1 + 2 + 301 + 20 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 91082476913796 + 53229646098225 = 9543714^2 + 7295865^2 .

It is not a de Polignac number, because 144312123012021 - 2⁹ = 144312123011509 is a prime.

It is a super-2 number, since 2×144312123012021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144312123012023) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 5890759366 + ... + 5890783863.

It is an arithmetic number, because the mean of its divisors is an integer number (17383667035865).

Almost surely, 2^{144312123012021} is an apocalyptic number.

It is an amenable number.

144312123012021 is a deficient number, since it is larger than the sum of its proper divisors (64291881418359).

144312123012021 is a wasteful number, since it uses less digits than its factorization.

144312123012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11781544596 (or 11781544593 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 144312123012021 its reverse (120210321213441), we get a palindrome (264522444225462).

The spelling of 144312123012021 in words is "one hundred forty-four trillion, three hundred twelve billion, one hundred twenty-three million, twelve thousand, twenty-one".