12210665240 has 64 divisors (see below), whose sum is σ = 28086773760. Its totient is φ = 4776261120.

The previous prime is 12210665231. The next prime is 12210665261. The reversal of 12210665240 is 4256601221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407657 + ... + 436583.

It is an arithmetic number, because the mean of its divisors is an integer number (438855840).

Almost surely, 2^12210665240 is an apocalyptic number.

12210665240 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 12210665240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14043386880).

12210665240 is an abundant number, since it is smaller than the sum of its proper divisors (15876108520).

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

12210665240 is a wasteful number, since it uses less digits than its factorization.

12210665240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29172 (or 29168 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 12210665240 in words is "twelve billion, two hundred ten million, six hundred sixty-five thousand, two hundred forty".