12121021102121 has 8 divisors (see below), whose sum is σ = 12774740882400. Its totient is φ = 11468878452000.

The previous prime is 12121021102093. The next prime is 12121021102123. The reversal of 12121021102121 is 12120112012121.

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 12121021102121 - 2¹⁴ = 12121021085737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12121021102121.

It is not an unprimeable number, because it can be changed into a prime (12121021102123) 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, 394266755 + ... + 394297496.

It is an arithmetic number, because the mean of its divisors is an integer number (1596842610300).

Almost surely, 2^{12121021102121} is an apocalyptic number.

It is an amenable number.

12121021102121 is a deficient number, since it is larger than the sum of its proper divisors (653719780279).

12121021102121 is an equidigital number, since it uses as much as digits as its factorization.

12121021102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788565079.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12121021102121 its reverse (12120112012121), we get a palindrome (24241133114242).

The spelling of 12121021102121 in words is "twelve trillion, one hundred twenty-one billion, twenty-one million, one hundred two thousand, one hundred twenty-one".