21270227167 has 8 divisors (see below), whose sum is σ = 24346641536. Its totient is φ = 18203265432.

The previous prime is 21270227149. The next prime is 21270227171. The reversal of 21270227167 is 76172207212.

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 21270227167 - 2¹⁵ = 21270194399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21270227177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2358333 + ... + 2367334.

It is an arithmetic number, because the mean of its divisors is an integer number (3043330192).

Almost surely, 2^21270227167 is an apocalyptic number.

21270227167 is a deficient number, since it is larger than the sum of its proper divisors (3076414369).

21270227167 is an equidigital number, since it uses as much as digits as its factorization.

21270227167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4726317.

The product of its (nonzero) digits is 32928, while the sum is 37.

The spelling of 21270227167 in words is "twenty-one billion, two hundred seventy million, two hundred twenty-seven thousand, one hundred sixty-seven".