12051021205 has 8 divisors (see below), whose sum is σ = 14467986432. Its totient is φ = 9636309648.

The previous prime is 12051021167. The next prime is 12051021209. The reversal of 12051021205 is 50212015021.

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

It is a cyclic number.

It is not a de Polignac number, because 12051021205 - 2¹⁷ = 12050890133 is a prime.

It is a super-2 number, since 2×12051021205² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12051021209) 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, 551629 + ... + 573058.

It is an arithmetic number, because the mean of its divisors is an integer number (1808498304).

Almost surely, 2^12051021205 is an apocalyptic number.

It is an amenable number.

12051021205 is a deficient number, since it is larger than the sum of its proper divisors (2416965227).

12051021205 is a wasteful number, since it uses less digits than its factorization.

12051021205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126835.

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 12051021205 its reverse (50212015021), we get a palindrome (62263036226).

The spelling of 12051021205 in words is "twelve billion, fifty-one million, twenty-one thousand, two hundred five".