20012021201211 has 16 divisors (see below), whose sum is σ = 28735823289600. Its totient is φ = 12314827101600.

The previous prime is 20012021201203. The next prime is 20012021201281. The reversal of 20012021201211 is 11210212021002.

It is not a de Polignac number, because 20012021201211 - 2³ = 20012021201203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20012021201281) 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 15 ways as a sum of consecutive naturals, for example, 3617911 + ... + 7287888.

It is an arithmetic number, because the mean of its divisors is an integer number (1795988955600).

Almost surely, 2^{20012021201211} is an apocalyptic number.

20012021201211 is a deficient number, since it is larger than the sum of its proper divisors (8723802088389).

20012021201211 is a wasteful number, since it uses less digits than its factorization.

20012021201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10952866.

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

Adding to 20012021201211 its reverse (11210212021002), we get a palindrome (31222233222213).

The spelling of 20012021201211 in words is "twenty trillion, twelve billion, twenty-one million, two hundred one thousand, two hundred eleven".