12122102121 has 8 divisors (see below), whose sum is σ = 16290069504. Its totient is φ = 8017768080.

The previous prime is 12122102077. The next prime is 12122102147. The reversal of 12122102121 is 12120122121.

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

It is not a de Polignac number, because 12122102121 - 2⁹ = 12122101609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12122102121.

It is not an unprimeable number, because it can be changed into a prime (12122102221) 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, 15907890 + ... + 15908651.

It is an arithmetic number, because the mean of its divisors is an integer number (2036258688).

Almost surely, 2^12122102121 is an apocalyptic number.

It is an amenable number.

12122102121 is a deficient number, since it is larger than the sum of its proper divisors (4167967383).

12122102121 is a wasteful number, since it uses less digits than its factorization.

12122102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31816671.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12122102121 its reverse (12120122121), we get a palindrome (24242224242).

The spelling of 12122102121 in words is "twelve billion, one hundred twenty-two million, one hundred two thousand, one hundred twenty-one".