23121520241203 has 4 divisors (see below), whose sum is σ = 23298020395848. Its totient is φ = 22945020086560.

The previous prime is 23121520241189. The next prime is 23121520241233. The reversal of 23121520241203 is 30214202512132.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23121520241203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23121520241233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88250077126 + ... + 88250077387.

It is an arithmetic number, because the mean of its divisors is an integer number (5824505098962).

Almost surely, 2^{23121520241203} is an apocalyptic number.

23121520241203 is a deficient number, since it is larger than the sum of its proper divisors (176500154645).

23121520241203 is a wasteful number, since it uses less digits than its factorization.

23121520241203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176500154644.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 23121520241203 its reverse (30214202512132), we get a palindrome (53335722753335).

The spelling of 23121520241203 in words is "twenty-three trillion, one hundred twenty-one billion, five hundred twenty million, two hundred forty-one thousand, two hundred three".