12212504500 has 48 divisors (see below), whose sum is σ = 30482419968. Its totient is φ = 4187143200.

The previous prime is 12212504497. The next prime is 12212504503. The reversal of 12212504500 is 540521221.

It is an interprime number because it is at equal distance from previous prime (12212504497) and next prime (12212504503).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212504503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1741144 + ... + 1748143.

It is an arithmetic number, because the mean of its divisors is an integer number (635050416).

Almost surely, 2^12212504500 is an apocalyptic number.

12212504500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212504500 is an abundant number, since it is smaller than the sum of its proper divisors (18269915468).

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

12212504500 is a wasteful number, since it uses less digits than its factorization.

12212504500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3489313 (or 3489301 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The spelling of 12212504500 in words is "twelve billion, two hundred twelve million, five hundred four thousand, five hundred".