20012020211211 has 192 divisors, whose sum is σ = 33577951444992. Its totient is φ = 10532470652928.

The previous prime is 20012020211207. The next prime is 20012020211237. The reversal of 20012020211211 is 11211202021002.

It is not a de Polignac number, because 20012020211211 - 2² = 20012020211207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20012020210211) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 8727438981 + ... + 8727441273.

It is an arithmetic number, because the mean of its divisors is an integer number (174885163776).

Almost surely, 2^{20012020211211} is an apocalyptic number.

20012020211211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20012020211211 is a deficient number, since it is larger than the sum of its proper divisors (13565931233781).

20012020211211 is a wasteful number, since it uses less digits than its factorization.

20012020211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2818 (or 2811 counting only the distinct ones).

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

Adding to 20012020211211 its reverse (11211202021002), we get a palindrome (31223222232213).

The spelling of 20012020211211 in words is "twenty trillion, twelve billion, twenty million, two hundred eleven thousand, two hundred eleven".