12205243146 has 16 divisors (see below), whose sum is σ = 24411757824. Its totient is φ = 4068202464.

The previous prime is 12205243117. The next prime is 12205243147. The reversal of 12205243146 is 64134250221.

It is not an unprimeable number, because it can be changed into a prime (12205243147) 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, 110710 + ... + 191486.

It is an arithmetic number, because the mean of its divisors is an integer number (1525734864).

Almost surely, 2^12205243146 is an apocalyptic number.

12205243146 is an abundant number, since it is smaller than the sum of its proper divisors (12206514678).

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

12205243146 is a wasteful number, since it uses less digits than its factorization.

12205243146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105965.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 12205243146 its reverse (64134250221), we get a palindrome (76339493367).

The spelling of 12205243146 in words is "twelve billion, two hundred five million, two hundred forty-three thousand, one hundred forty-six".