12204435541 has 4 divisors (see below), whose sum is σ = 12922343532. Its totient is φ = 11486527552.

The previous prime is 12204435479. The next prime is 12204435571. The reversal of 12204435541 is 14553440221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7170533041 + 5033902500 = 84679^2 + 70950^2 .

It is a cyclic number.

It is not a de Polignac number, because 12204435541 - 2⁷ = 12204435413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12204435571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 358953970 + ... + 358954003.

It is an arithmetic number, because the mean of its divisors is an integer number (3230585883).

Almost surely, 2^12204435541 is an apocalyptic number.

It is an amenable number.

12204435541 is a deficient number, since it is larger than the sum of its proper divisors (717907991).

12204435541 is an equidigital number, since it uses as much as digits as its factorization.

12204435541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717907990.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 12204435541 its reverse (14553440221), we get a palindrome (26757875762).

The spelling of 12204435541 in words is "twelve billion, two hundred four million, four hundred thirty-five thousand, five hundred forty-one".