10212102002021 has 4 divisors (see below), whose sum is σ = 10280639599500. Its totient is φ = 10143564404544.

The previous prime is 10212102001999. The next prime is 10212102002059. The reversal of 10212102002021 is 12020020121201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2856691530625 + 7355410471396 = 1690175^2 + 2712086^2 .

It is a cyclic number.

It is not a de Polignac number, because 10212102002021 - 2¹⁴ = 10212101985637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10212102001987 and 10212102002005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212102002071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34268798516 + ... + 34268798813.

It is an arithmetic number, because the mean of its divisors is an integer number (2570159899875).

Almost surely, 2^{10212102002021} is an apocalyptic number.

It is an amenable number.

10212102002021 is a deficient number, since it is larger than the sum of its proper divisors (68537597479).

10212102002021 is an equidigital number, since it uses as much as digits as its factorization.

10212102002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68537597478.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10212102002021 its reverse (12020020121201), we get a palindrome (22232122123222).

The spelling of 10212102002021 in words is "ten trillion, two hundred twelve billion, one hundred two million, two thousand, twenty-one".