145124501042121 has 4 divisors (see below), whose sum is σ = 193499334722832. Its totient is φ = 96749667361412.

The previous prime is 145124501042071. The next prime is 145124501042153. The reversal of 145124501042121 is 121240105421541.

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 a cyclic number.

It is not a de Polignac number, because 145124501042121 - 2⁹ = 145124501041609 is a prime.

It is a super-2 number, since 2×145124501042121² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145124501042621) 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, 24187416840351 + ... + 24187416840356.

It is an arithmetic number, because the mean of its divisors is an integer number (48374833680708).

Almost surely, 2^{145124501042121} is an apocalyptic number.

It is an amenable number.

145124501042121 is a deficient number, since it is larger than the sum of its proper divisors (48374833680711).

145124501042121 is an equidigital number, since it uses as much as digits as its factorization.

145124501042121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48374833680710.

The product of its (nonzero) digits is 12800, while the sum is 33.

Adding to 145124501042121 its reverse (121240105421541), we get a palindrome (266364606463662).

The spelling of 145124501042121 in words is "one hundred forty-five trillion, one hundred twenty-four billion, five hundred one million, forty-two thousand, one hundred twenty-one".