20012122220211 has 24 divisors (see below), whose sum is σ = 31978397617920. Its totient is φ = 11957734143600.

The previous prime is 20012122220183. The next prime is 20012122220219. The reversal of 20012122220211 is 11202222121002.

It is a happy number.

20012122220211 is a `hidden beast` number, since 20 + 0 + 1 + 212 + 2 + 220 + 211 = 666.

It is not a de Polignac number, because 20012122220211 - 2⁵ = 20012122220179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20012122220219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1423532751 + ... + 1423546808.

It is an arithmetic number, because the mean of its divisors is an integer number (1332433234080).

Almost surely, 2^{20012122220211} is an apocalyptic number.

20012122220211 is a deficient number, since it is larger than the sum of its proper divisors (11966275397709).

20012122220211 is a wasteful number, since it uses less digits than its factorization.

20012122220211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847079647 (or 2847079644 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20012122220211 its reverse (11202222121002), we get a palindrome (31214344341213).

It can be divided in two parts, 2001 and 2122220211, that added together give a palindrome (2122222212).

The spelling of 20012122220211 in words is "twenty trillion, twelve billion, one hundred twenty-two million, two hundred twenty thousand, two hundred eleven".