20012002101211 has 4 divisors (see below), whose sum is σ = 20028861413352. Its totient is φ = 19995142789072.

The previous prime is 20012002101209. The next prime is 20012002101227. The reversal of 20012002101211 is 11210120021002.

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

It is a cyclic number.

It is not a de Polignac number, because 20012002101211 - 2¹ = 20012002101209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20012002101191 and 20012002101200.

It is not an unprimeable number, because it can be changed into a prime (20012002101241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8429654290 + ... + 8429656663.

It is an arithmetic number, because the mean of its divisors is an integer number (5007215353338).

Almost surely, 2^{20012002101211} is an apocalyptic number.

20012002101211 is a deficient number, since it is larger than the sum of its proper divisors (16859312141).

20012002101211 is a wasteful number, since it uses less digits than its factorization.

20012002101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16859312140.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20012002101211 its reverse (11210120021002), we get a palindrome (31222122122213).

The spelling of 20012002101211 in words is "twenty trillion, twelve billion, two million, one hundred one thousand, two hundred eleven".