144213452121 has 4 divisors (see below), whose sum is σ = 192284602832. Its totient is φ = 96142301412.

The previous prime is 144213452099. The next prime is 144213452161. The reversal of 144213452121 is 121254312441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 144213452121 - 2⁹ = 144213451609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144213452161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24035575351 + ... + 24035575356.

It is an arithmetic number, because the mean of its divisors is an integer number (48071150708).

Almost surely, 2^144213452121 is an apocalyptic number.

It is an amenable number.

144213452121 is a deficient number, since it is larger than the sum of its proper divisors (48071150711).

144213452121 is an equidigital number, since it uses as much as digits as its factorization.

144213452121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48071150710.

The product of its digits is 7680, while the sum is 30.

Adding to 144213452121 its reverse (121254312441), we get a palindrome (265467764562).

The spelling of 144213452121 in words is "one hundred forty-four billion, two hundred thirteen million, four hundred fifty-two thousand, one hundred twenty-one".