12205004251 has 8 divisors (see below), whose sum is σ = 13327758000. Its totient is φ = 11084451840.

The previous prime is 12205004239. The next prime is 12205004267. The reversal of 12205004251 is 15240050221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12205004251 - 2⁵ = 12205004219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12205004221) 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, 538726 + ... + 560923.

It is an arithmetic number, because the mean of its divisors is an integer number (1665969750).

Almost surely, 2^12205004251 is an apocalyptic number.

12205004251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12205004251 is a deficient number, since it is larger than the sum of its proper divisors (1122753749).

12205004251 is a wasteful number, since it uses less digits than its factorization.

12205004251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100669.

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 12205004251 its reverse (15240050221), we get a palindrome (27445054472).

The spelling of 12205004251 in words is "twelve billion, two hundred five million, four thousand, two hundred fifty-one".