12231911228 has 6 divisors (see below), whose sum is σ = 21405844656. Its totient is φ = 6115955612.

The previous prime is 12231911227. The next prime is 12231911239. The reversal of 12231911228 is 82211913221.

It is a junction number, because it is equal to n+sod(n) for n = 12231911194 and 12231911203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231911227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1528988900 + ... + 1528988907.

It is an arithmetic number, because the mean of its divisors is an integer number (3567640776).

Almost surely, 2^12231911228 is an apocalyptic number.

It is an amenable number.

12231911228 is a deficient number, since it is larger than the sum of its proper divisors (9173933428).

12231911228 is a wasteful number, since it uses less digits than its factorization.

12231911228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3057977811 (or 3057977809 counting only the distinct ones).

The product of its digits is 3456, while the sum is 32.

The spelling of 12231911228 in words is "twelve billion, two hundred thirty-one million, nine hundred eleven thousand, two hundred twenty-eight".