20020102120211 has 4 divisors (see below), whose sum is σ = 20226494925672. Its totient is φ = 19813709314752.

The previous prime is 20020102120189. The next prime is 20020102120247. The reversal of 20020102120211 is 11202120102002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20020102120211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020102120411) 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 3 ways as a sum of consecutive naturals, for example, 103196402585 + ... + 103196402778.

It is an arithmetic number, because the mean of its divisors is an integer number (5056623731418).

Almost surely, 2^{20020102120211} is an apocalyptic number.

20020102120211 is a deficient number, since it is larger than the sum of its proper divisors (206392805461).

20020102120211 is an equidigital number, since it uses as much as digits as its factorization.

20020102120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206392805460.

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

Adding to 20020102120211 its reverse (11202120102002), we get a palindrome (31222222222213).

The spelling of 20020102120211 in words is "twenty trillion, twenty billion, one hundred two million, one hundred twenty thousand, two hundred eleven".