21127332801 has 8 divisors (see below), whose sum is σ = 29394550080. Its totient is φ = 13472502032.

The previous prime is 21127332799. The next prime is 21127332817. The reversal of 21127332801 is 10823372112.

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 21127332801 - 2¹ = 21127332799 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21127332881) 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, 153096546 + ... + 153096683.

It is an arithmetic number, because the mean of its divisors is an integer number (3674318760).

Almost surely, 2^21127332801 is an apocalyptic number.

It is an amenable number.

21127332801 is a deficient number, since it is larger than the sum of its proper divisors (8267217279).

21127332801 is a wasteful number, since it uses less digits than its factorization.

21127332801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306193255.

The product of its (nonzero) digits is 4032, while the sum is 30.

The spelling of 21127332801 in words is "twenty-one billion, one hundred twenty-seven million, three hundred thirty-two thousand, eight hundred one".