12290487220 has 48 divisors (see below), whose sum is σ = 28299414528. Its totient is φ = 4446565760.

The previous prime is 12290487191. The next prime is 12290487227. The reversal of 12290487220 is 2278409221.

It is a super-2 number, since 2×12290487220² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12290487220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12290487227) 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, 98452 + ... + 185131.

It is an arithmetic number, because the mean of its divisors is an integer number (589571136).

Almost surely, 2^12290487220 is an apocalyptic number.

12290487220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12290487220 is an abundant number, since it is smaller than the sum of its proper divisors (16008927308).

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

12290487220 is a wasteful number, since it uses less digits than its factorization.

12290487220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283800 (or 283798 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The spelling of 12290487220 in words is "twelve billion, two hundred ninety million, four hundred eighty-seven thousand, two hundred twenty".