12227881845 has 16 divisors (see below), whose sum is σ = 19596335040. Its totient is φ = 6510962304.

The previous prime is 12227881843. The next prime is 12227881849. The reversal of 12227881845 is 54818872221.

It is not a de Polignac number, because 12227881845 - 2¹ = 12227881843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12227881794 and 12227881803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12227881843) 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, 651355 + ... + 669864.

It is an arithmetic number, because the mean of its divisors is an integer number (1224770940).

Almost surely, 2^12227881845 is an apocalyptic number.

12227881845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12227881845 is a deficient number, since it is larger than the sum of its proper divisors (7368453195).

12227881845 is a wasteful number, since it uses less digits than its factorization.

12227881845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321844.

The product of its digits is 573440, while the sum is 48.

The spelling of 12227881845 in words is "twelve billion, two hundred twenty-seven million, eight hundred eighty-one thousand, eight hundred forty-five".