12122553205 has 24 divisors (see below), whose sum is σ = 17917518168. Its totient is φ = 7823628288.

The previous prime is 12122553181. The next prime is 12122553211. The reversal of 12122553205 is 50235522121.

It can be written as a sum of positive squares in 4 ways, for example, as 4546939761 + 7575613444 = 67431^2 + 87038^2 .

It is not a de Polignac number, because 12122553205 - 2¹⁷ = 12122422133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1451124 + ... + 1459453.

It is an arithmetic number, because the mean of its divisors is an integer number (746563257).

Almost surely, 2^12122553205 is an apocalyptic number.

It is an amenable number.

12122553205 is a deficient number, since it is larger than the sum of its proper divisors (5794964963).

12122553205 is a wasteful number, since it uses less digits than its factorization.

12122553205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2910613 (or 2910606 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 12122553205 in words is "twelve billion, one hundred twenty-two million, five hundred fifty-three thousand, two hundred five".