20102020212101 has 16 divisors (see below), whose sum is σ = 21037527840384. Its totient is φ = 19171643730624.

The previous prime is 20102020211971. The next prime is 20102020212119. The reversal of 20102020212101 is 10121202020102.

It is a cyclic number.

It is not a de Polignac number, because 20102020212101 - 2¹⁴ = 20102020195717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102020212121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197343155 + ... + 197444991.

It is an arithmetic number, because the mean of its divisors is an integer number (1314845490024).

Almost surely, 2^{20102020212101} is an apocalyptic number.

It is an amenable number.

20102020212101 is a deficient number, since it is larger than the sum of its proper divisors (935507628283).

20102020212101 is a wasteful number, since it uses less digits than its factorization.

20102020212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126940.

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

Adding to 20102020212101 its reverse (10121202020102), we get a palindrome (30223222232203).

The spelling of 20102020212101 in words is "twenty trillion, one hundred two billion, twenty million, two hundred twelve thousand, one hundred one".