12201212123 has 8 divisors (see below), whose sum is σ = 12218228880. Its totient is φ = 12184210080.

The previous prime is 12201212113. The next prime is 12201212129. The reversal of 12201212123 is 32121210221.

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 12201212123 - 2⁶ = 12201212059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12201212129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3523613 + ... + 3527073.

It is an arithmetic number, because the mean of its divisors is an integer number (1527278610).

Almost surely, 2^12201212123 is an apocalyptic number.

12201212123 is a deficient number, since it is larger than the sum of its proper divisors (17016757).

12201212123 is a wasteful number, since it uses less digits than its factorization.

12201212123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7357.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12201212123 its reverse (32121210221), we get a palindrome (44322422344).

The spelling of 12201212123 in words is "twelve billion, two hundred one million, two hundred twelve thousand, one hundred twenty-three".