10202121002121 has 16 divisors (see below), whose sum is σ = 13607066382336. Its totient is φ = 6799295086976.

The previous prime is 10202121002089. The next prime is 10202121002149. The reversal of 10202121002121 is 12120012120201.

10202121002121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 10202121002121 - 2⁵ = 10202121002089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10202121002121.

It is not an unprimeable number, because it can be changed into a prime (10202121002191) 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, 210837496 + ... + 210885878.

It is an arithmetic number, because the mean of its divisors is an integer number (850441648896).

Almost surely, 2^{10202121002121} is an apocalyptic number.

It is an amenable number.

10202121002121 is a deficient number, since it is larger than the sum of its proper divisors (3404945380215).

10202121002121 is a wasteful number, since it uses less digits than its factorization.

10202121002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68832.

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

Adding to 10202121002121 its reverse (12120012120201), we get a palindrome (22322133122322).

The spelling of 10202121002121 in words is "ten trillion, two hundred two billion, one hundred twenty-one million, two thousand, one hundred twenty-one".