20112011211 has 16 divisors (see below), whose sum is σ = 28617007104. Its totient is φ = 12519932544.

The previous prime is 20112011203. The next prime is 20112011263. The reversal of 20112011211 is 11211021102.

It is not a de Polignac number, because 20112011211 - 2³ = 20112011203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20112011201) 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, 1546095 + ... + 1559048.

It is an arithmetic number, because the mean of its divisors is an integer number (1788562944).

Almost surely, 2^20112011211 is an apocalyptic number.

20112011211 is a deficient number, since it is larger than the sum of its proper divisors (8504995893).

20112011211 is a wasteful number, since it uses less digits than its factorization.

20112011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3105290.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20112011211 its reverse (11211021102), we get a palindrome (31323032313).

The spelling of 20112011211 in words is "twenty billion, one hundred twelve million, eleven thousand, two hundred eleven".