20112220211 has 16 divisors (see below), whose sum is σ = 21105792000. Its totient is φ = 19128825408.

The previous prime is 20112220187. The next prime is 20112220217. The reversal of 20112220211 is 11202221102.

It is a cyclic number.

It is not a de Polignac number, because 20112220211 - 2¹⁸ = 20111958067 is a prime.

It is a super-3 number, since 3×20112220211³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20112220217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4323815 + ... + 4328463.

It is an arithmetic number, because the mean of its divisors is an integer number (1319112000).

Almost surely, 2^20112220211 is an apocalyptic number.

20112220211 is a deficient number, since it is larger than the sum of its proper divisors (993571789).

20112220211 is a wasteful number, since it uses less digits than its factorization.

20112220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5698.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20112220211 its reverse (11202221102), we get a palindrome (31314441313).

It can be divided in two parts, 2011 and 2220211, that added together give a palindrome (2222222).

The spelling of 20112220211 in words is "twenty billion, one hundred twelve million, two hundred twenty thousand, two hundred eleven".