12123554522 has 8 divisors (see below), whose sum is σ = 19255057236. Its totient is φ = 5705202112.

The previous prime is 12123554479. The next prime is 12123554537. The reversal of 12123554522 is 22545532121.

It can be written as a sum of positive squares in 2 ways, for example, as 9162126961 + 2961427561 = 95719^2 + 54419^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178287533 + ... + 178287600.

Almost surely, 2^12123554522 is an apocalyptic number.

12123554522 is a deficient number, since it is larger than the sum of its proper divisors (7131502714).

12123554522 is a wasteful number, since it uses less digits than its factorization.

12123554522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356575152.

The product of its digits is 24000, while the sum is 32.

The spelling of 12123554522 in words is "twelve billion, one hundred twenty-three million, five hundred fifty-four thousand, five hundred twenty-two".