21428064201 has 16 divisors (see below), whose sum is σ = 29406728960. Its totient is φ = 13873317120.

The previous prime is 21428064181. The next prime is 21428064209. The reversal of 21428064201 is 10246082412.

It is not a de Polignac number, because 21428064201 - 2¹⁰ = 21428063177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21428064209) 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, 726640 + ... + 755553.

It is an arithmetic number, because the mean of its divisors is an integer number (1837920560).

Almost surely, 2^21428064201 is an apocalyptic number.

It is an amenable number.

21428064201 is a deficient number, since it is larger than the sum of its proper divisors (7978664759).

21428064201 is a wasteful number, since it uses less digits than its factorization.

21428064201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482336.

The product of its (nonzero) digits is 6144, while the sum is 30.

The spelling of 21428064201 in words is "twenty-one billion, four hundred twenty-eight million, sixty-four thousand, two hundred one".