21104203331201 has 16 divisors (see below), whose sum is σ = 21893010585600. Its totient is φ = 20329530491088.

The previous prime is 21104203331149. The next prime is 21104203331221. The reversal of 21104203331201 is 10213330240112.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21104203331201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21104203331221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488891 + ... + 6515168.

It is an arithmetic number, because the mean of its divisors is an integer number (1368313161600).

Almost surely, 2^{21104203331201} is an apocalyptic number.

It is an amenable number.

21104203331201 is a deficient number, since it is larger than the sum of its proper divisors (788807254399).

21104203331201 is an equidigital number, since it uses as much as digits as its factorization.

21104203331201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7005068.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21104203331201 its reverse (10213330240112), we get a palindrome (31317533571313).

The spelling of 21104203331201 in words is "twenty-one trillion, one hundred four billion, two hundred three million, three hundred thirty-one thousand, two hundred one".