12227045540 has 96 divisors (see below), whose sum is σ = 27282528000. Its totient is φ = 4595738112.

The previous prime is 12227045533. The next prime is 12227045573. The reversal of 12227045540 is 4554072221.

It is a junction number, because it is equal to n+sod(n) for n = 12227045497 and 12227045506.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3522926 + ... + 3526394.

It is an arithmetic number, because the mean of its divisors is an integer number (284193000).

Almost surely, 2^12227045540 is an apocalyptic number.

12227045540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12227045540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13641264000).

12227045540 is an abundant number, since it is smaller than the sum of its proper divisors (15055482460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12227045540 is a wasteful number, since it uses less digits than its factorization.

12227045540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3669 (or 3667 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 32.

The spelling of 12227045540 in words is "twelve billion, two hundred twenty-seven million, forty-five thousand, five hundred forty".