12100121201021 has 16 divisors (see below), whose sum is σ = 14033854350720. Its totient is φ = 10218503581440.

The previous prime is 12100121200927. The next prime is 12100121201023. The reversal of 12100121201021 is 12010212100121.

It is not a de Polignac number, because 12100121201021 - 2¹⁸ = 12100120938877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12100121200987 and 12100121201005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100121201023) 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, 34384271 + ... + 34734396.

It is an arithmetic number, because the mean of its divisors is an integer number (877115896920).

Almost surely, 2^{12100121201021} is an apocalyptic number.

It is an amenable number.

12100121201021 is a deficient number, since it is larger than the sum of its proper divisors (1933733149699).

12100121201021 is an equidigital number, since it uses as much as digits as its factorization.

12100121201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69119044.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12100121201021 its reverse (12010212100121), we get a palindrome (24110333301142).

The spelling of 12100121201021 in words is "twelve trillion, one hundred billion, one hundred twenty-one million, two hundred one thousand, twenty-one".