21400430201 has 32 divisors (see below), whose sum is σ = 23467691520. Its totient is φ = 19452787200.

The previous prime is 21400430197. The next prime is 21400430203. The reversal of 21400430201 is 10203400412.

It is a cyclic number.

It is not a de Polignac number, because 21400430201 - 2² = 21400430197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21400430201.

It is not an unprimeable number, because it can be changed into a prime (21400430203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12434021 + ... + 12435741.

It is an arithmetic number, because the mean of its divisors is an integer number (733365360).

Almost surely, 2^21400430201 is an apocalyptic number.

It is an amenable number.

21400430201 is a deficient number, since it is larger than the sum of its proper divisors (2067261319).

21400430201 is a wasteful number, since it uses less digits than its factorization.

21400430201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2057.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21400430201 its reverse (10203400412), we get a palindrome (31603830613).

The spelling of 21400430201 in words is "twenty-one billion, four hundred million, four hundred thirty thousand, two hundred one".