241231543500021 has 4 divisors (see below), whose sum is σ = 321642058000032. Its totient is φ = 160821029000012.

The previous prime is 241231543499981. The next prime is 241231543500041. The reversal of 241231543500021 is 120005345132142.

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 a de Polignac number, because none of the positive numbers 2^k-241231543500021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (241231543500041) 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, 40205257250001 + ... + 40205257250006.

It is an arithmetic number, because the mean of its divisors is an integer number (80410514500008).

Almost surely, 2^{241231543500021} is an apocalyptic number.

It is an amenable number.

241231543500021 is a deficient number, since it is larger than the sum of its proper divisors (80410514500011).

241231543500021 is an equidigital number, since it uses as much as digits as its factorization.

241231543500021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80410514500010.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 241231543500021 its reverse (120005345132142), we get a palindrome (361236888632163).

The spelling of 241231543500021 in words is "two hundred forty-one trillion, two hundred thirty-one billion, five hundred forty-three million, five hundred thousand, twenty-one".