12922220 has 24 divisors (see below), whose sum is σ = 27216000. Its totient is φ = 5153792.

The previous prime is 12922219. The next prime is 12922229. The reversal of 12922220 is 2222921.

12922220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12922192 and 12922201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12922229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8261 + ... + 9699.

It is an arithmetic number, because the mean of its divisors is an integer number (1134000).

Almost surely, 2^12922220 is an apocalyptic number.

12922220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12922220 is an abundant number, since it is smaller than the sum of its proper divisors (14293780).

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

12922220 is a wasteful number, since it uses less digits than its factorization.

12922220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1897 (or 1895 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 12922220 is about 3594.7489481186. The cubic root of 12922220 is about 234.6635898716.

The spelling of 12922220 in words is "twelve million, nine hundred twenty-two thousand, two hundred twenty".