21272022867 has 8 divisors (see below), whose sum is σ = 28406134224. Its totient is φ = 14159630048.

The previous prime is 21272022853. The next prime is 21272022883. The reversal of 21272022867 is 76822027212.

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 21272022867 - 2¹² = 21272018771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21272022817) 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, 5427348 + ... + 5431265.

It is an arithmetic number, because the mean of its divisors is an integer number (3550766778).

Almost surely, 2^21272022867 is an apocalyptic number.

21272022867 is a deficient number, since it is larger than the sum of its proper divisors (7134111357).

21272022867 is a wasteful number, since it uses less digits than its factorization.

21272022867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10859269.

The product of its (nonzero) digits is 75264, while the sum is 39.

The spelling of 21272022867 in words is "twenty-one billion, two hundred seventy-two million, twenty-two thousand, eight hundred sixty-seven".