12231551140 has 12 divisors (see below), whose sum is σ = 25686257436. Its totient is φ = 4892620448.

The previous prime is 12231551083. The next prime is 12231551141. The reversal of 12231551140 is 4115513221.

It can be written as a sum of positive squares in 2 ways, for example, as 5668282944 + 6563268196 = 75288^2 + 81014^2 .

It is a super-2 number, since 2×12231551140² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12231551141) 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, 305788759 + ... + 305788798.

It is an arithmetic number, because the mean of its divisors is an integer number (2140521453).

Almost surely, 2^12231551140 is an apocalyptic number.

12231551140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12231551140 is an abundant number, since it is smaller than the sum of its proper divisors (13454706296).

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

12231551140 is a wasteful number, since it uses less digits than its factorization.

12231551140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611577566 (or 611577564 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 12231551140 in words is "twelve billion, two hundred thirty-one million, five hundred fifty-one thousand, one hundred forty".