12212840540 has 24 divisors (see below), whose sum is σ = 25651073952. Its totient is φ = 4884353600.

The previous prime is 12212840459. The next prime is 12212840551. The reversal of 12212840540 is 4504821221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88457 + ... + 179583.

It is an arithmetic number, because the mean of its divisors is an integer number (1068794748).

Almost surely, 2^12212840540 is an apocalyptic number.

12212840540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212840540 is an abundant number, since it is smaller than the sum of its proper divisors (13438233412).

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

12212840540 is a wasteful number, since it uses less digits than its factorization.

12212840540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97837 (or 97835 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The spelling of 12212840540 in words is "twelve billion, two hundred twelve million, eight hundred forty thousand, five hundred forty".