20002211111211 has 32 divisors (see below), whose sum is σ = 31969360066560. Its totient is φ = 10884305114496.

The previous prime is 20002211111191. The next prime is 20002211111213. The reversal of 20002211111211 is 11211111220002.

It is a happy number.

It is not a de Polignac number, because 20002211111211 - 2¹⁷ = 20002210980139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20002211111213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 273823816 + ... + 273896853.

It is an arithmetic number, because the mean of its divisors is an integer number (999042502080).

Almost surely, 2^{20002211111211} is an apocalyptic number.

20002211111211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20002211111211 is a deficient number, since it is larger than the sum of its proper divisors (11967148955349).

20002211111211 is a wasteful number, since it uses less digits than its factorization.

20002211111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547720763.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20002211111211 its reverse (11211111220002), we get a palindrome (31213322331213).

The spelling of 20002211111211 in words is "twenty trillion, two billion, two hundred eleven million, one hundred eleven thousand, two hundred eleven".