145221124013 has 8 divisors (see below), whose sum is σ = 165974565120. Its totient is φ = 124469574480.

The previous prime is 145221123989. The next prime is 145221124031. The reversal of 145221124013 is 310421122541.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145221124013 - 2³⁰ = 144147382189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145221124033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304373 + ... + 618938.

It is an arithmetic number, because the mean of its divisors is an integer number (20746820640).

Almost surely, 2^145221124013 is an apocalyptic number.

It is an amenable number.

145221124013 is a deficient number, since it is larger than the sum of its proper divisors (20753441107).

145221124013 is an equidigital number, since it uses as much as digits as its factorization.

145221124013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945787.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 145221124013 its reverse (310421122541), we get a palindrome (455642246554).

The spelling of 145221124013 in words is "one hundred forty-five billion, two hundred twenty-one million, one hundred twenty-four thousand, thirteen".