12205770 has 16 divisors (see below), whose sum is σ = 29293920. Its totient is φ = 3254864.

The previous prime is 12205757. The next prime is 12205777. The reversal of 12205770 is 7750221.

It is a self number, because there is not a number n which added to its sum of digits gives 12205770.

It is not an unprimeable number, because it can be changed into a prime (12205777) 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, 203400 + ... + 203459.

It is an arithmetic number, because the mean of its divisors is an integer number (1830870).

Almost surely, 2^12205770 is an apocalyptic number.

12205770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12205770 is an abundant number, since it is smaller than the sum of its proper divisors (17088150).

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

12205770 is a wasteful number, since it uses less digits than its factorization.

12205770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406869.

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 12205770 is about 3493.6757147738. The cubic root of 12205770 is about 230.2440383913.

Adding to 12205770 its reverse (7750221), we get a palindrome (19955991).

The spelling of 12205770 in words is "twelve million, two hundred five thousand, seven hundred seventy".