21730400899201 has 8 divisors (see below), whose sum is σ = 21782935933920. Its totient is φ = 21677869067712.

The previous prime is 21730400899199. The next prime is 21730400899219. The reversal of 21730400899201 is 10299800403712.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21730400899201 - 2¹ = 21730400899199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21730400819201) 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 7 ways as a sum of consecutive naturals, for example, 13073526 + ... + 14641648.

It is an arithmetic number, because the mean of its divisors is an integer number (2722866991740).

Almost surely, 2^{21730400899201} is an apocalyptic number.

It is an amenable number.

21730400899201 is a deficient number, since it is larger than the sum of its proper divisors (52535034719).

21730400899201 is a wasteful number, since it uses less digits than its factorization.

21730400899201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601615.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 21730400899201 in words is "twenty-one trillion, seven hundred thirty billion, four hundred million, eight hundred ninety-nine thousand, two hundred one".