121524541073 has 4 divisors (see below), whose sum is σ = 130872582708. Its totient is φ = 112176499440.

The previous prime is 121524541067. The next prime is 121524541133. The reversal of 121524541073 is 370145425121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51523552144 + 70000988929 = 226988^2 + 264577^2 .

It is a cyclic number.

It is not a de Polignac number, because 121524541073 - 2¹⁸ = 121524278929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121524541013) 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 3 ways as a sum of consecutive naturals, for example, 4674020798 + ... + 4674020823.

It is an arithmetic number, because the mean of its divisors is an integer number (32718145677).

Almost surely, 2^121524541073 is an apocalyptic number.

121524541073 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121524541073 is a deficient number, since it is larger than the sum of its proper divisors (9348041635).

121524541073 is an equidigital number, since it uses as much as digits as its factorization.

121524541073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9348041634.

The product of its (nonzero) digits is 33600, while the sum is 35.

Adding to 121524541073 its reverse (370145425121), we get a palindrome (491669966194).

The spelling of 121524541073 in words is "one hundred twenty-one billion, five hundred twenty-four million, five hundred forty-one thousand, seventy-three".