12223521871 has 4 divisors (see below), whose sum is σ = 13334751144. Its totient is φ = 11112292600.

The previous prime is 12223521859. The next prime is 12223521889. The reversal of 12223521871 is 17812532221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12223521871 - 2¹¹ = 12223519823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12223521841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555614620 + ... + 555614641.

It is an arithmetic number, because the mean of its divisors is an integer number (3333687786).

Almost surely, 2^12223521871 is an apocalyptic number.

12223521871 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12223521871 is a deficient number, since it is larger than the sum of its proper divisors (1111229273).

12223521871 is a wasteful number, since it uses less digits than its factorization.

12223521871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111229272.

The product of its digits is 13440, while the sum is 34.

The spelling of 12223521871 in words is "twelve billion, two hundred twenty-three million, five hundred twenty-one thousand, eight hundred seventy-one".