21632210401 has 8 divisors (see below), whose sum is σ = 22796236224. Its totient is φ = 20486809200.

The previous prime is 21632210399. The next prime is 21632210549. The reversal of 21632210401 is 10401223612.

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 21632210401 - 2¹ = 21632210399 is a prime.

It is a super-3 number, since 3×21632210401³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21632210801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4653771 + ... + 4658416.

It is an arithmetic number, because the mean of its divisors is an integer number (2849529528).

Almost surely, 2^21632210401 is an apocalyptic number.

It is an amenable number.

21632210401 is a deficient number, since it is larger than the sum of its proper divisors (1164025823).

21632210401 is a wasteful number, since it uses less digits than its factorization.

21632210401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9312311.

The product of its (nonzero) digits is 576, while the sum is 22.

The spelling of 21632210401 in words is "twenty-one billion, six hundred thirty-two million, two hundred ten thousand, four hundred one".