12122101222121 has 16 divisors (see below), whose sum is σ = 13534202373120. Its totient is φ = 10761778824720.

The previous prime is 12122101222103. The next prime is 12122101222219. The reversal of 12122101222121 is 12122210122121.

It is not a de Polignac number, because 12122101222121 - 2³⁸ = 11847223315177 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12122101222093 and 12122101222102.

It is not an unprimeable number, because it can be changed into a prime (12122121222121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91940 + ... + 4924698.

It is an arithmetic number, because the mean of its divisors is an integer number (845887648320).

Almost surely, 2^{12122101222121} is an apocalyptic number.

12122101222121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12122101222121 is a deficient number, since it is larger than the sum of its proper divisors (1412101150999).

12122101222121 is a wasteful number, since it uses less digits than its factorization.

12122101222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4838116.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12122101222121 its reverse (12122210122121), we get a palindrome (24244311344242).

The spelling of 12122101222121 in words is "twelve trillion, one hundred twenty-two billion, one hundred one million, two hundred twenty-two thousand, one hundred twenty-one".