24201221113409 has 2 divisors, whose sum is σ = 24201221113410. Its totient is φ = 24201221113408.

The previous prime is 24201221113393. The next prime is 24201221113471. The reversal of 24201221113409 is 90431112210242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23362751251009 + 838469862400 = 4833503^2 + 915680^2 .

It is a cyclic number.

It is not a de Polignac number, because 24201221113409 - 2⁴ = 24201221113393 is a prime.

It is a super-2 number, since 2×24201221113409² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (24201221113499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12100610556704 + 12100610556705.

It is an arithmetic number, because the mean of its divisors is an integer number (12100610556705).

Almost surely, 2^{24201221113409} is an apocalyptic number.

It is an amenable number.

24201221113409 is a deficient number, since it is larger than the sum of its proper divisors (1).

24201221113409 is an equidigital number, since it uses as much as digits as its factorization.

24201221113409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 24201221113409 in words is "twenty-four trillion, two hundred one billion, two hundred twenty-one million, one hundred thirteen thousand, four hundred nine".