12210543990 has 64 divisors (see below), whose sum is σ = 34275225600. Its totient is φ = 3084767712.

The previous prime is 12210543973. The next prime is 12210544001. The reversal of 12210543990 is 9934501221.

12210543990 is a `hidden beast` number, since 1 + 2 + 21 + 0 + 543 + 9 + 90 = 666.

It is a Curzon number.

It is a congruent number.

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, 1184982 + ... + 1195241.

It is an arithmetic number, because the mean of its divisors is an integer number (535550400).

Almost surely, 2^12210543990 is an apocalyptic number.

12210543990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12210543990 is an abundant number, since it is smaller than the sum of its proper divisors (22064681610).

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

12210543990 is a wasteful number, since it uses less digits than its factorization.

12210543990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380258 (or 2380252 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 12210543990 in words is "twelve billion, two hundred ten million, five hundred forty-three thousand, nine hundred ninety".