21270227163 has 16 divisors (see below), whose sum is σ = 28576329600. Its totient is φ = 14072224320.

The previous prime is 21270227149. The next prime is 21270227171. The reversal of 21270227163 is 36172207212.

It is not a de Polignac number, because 21270227163 - 2⁵ = 21270227131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21270227663) 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, 1128648 + ... + 1147338.

It is an arithmetic number, because the mean of its divisors is an integer number (1786020600).

Almost surely, 2^21270227163 is an apocalyptic number.

21270227163 is a deficient number, since it is larger than the sum of its proper divisors (7306102437).

21270227163 is a wasteful number, since it uses less digits than its factorization.

21270227163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21562.

The product of its (nonzero) digits is 14112, while the sum is 33.

The spelling of 21270227163 in words is "twenty-one billion, two hundred seventy million, two hundred twenty-seven thousand, one hundred sixty-three".