20110211211 has 32 divisors (see below), whose sum is σ = 29301984000. Its totient is φ = 12219596928.

The previous prime is 20110211197. The next prime is 20110211239. The reversal of 20110211211 is 11211201102.

It is not a de Polignac number, because 20110211211 - 2⁷ = 20110211083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20110211311) 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, 446305 + ... + 489293.

It is an arithmetic number, because the mean of its divisors is an integer number (915687000).

Almost surely, 2^20110211211 is an apocalyptic number.

20110211211 is a deficient number, since it is larger than the sum of its proper divisors (9191772789).

20110211211 is a wasteful number, since it uses less digits than its factorization.

20110211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43323.

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

Adding to 20110211211 its reverse (11211201102), we get a palindrome (31321412313).

It can be divided in two parts, 201102 and 11211, that multiplied together give a palindrome (2254554522).

The spelling of 20110211211 in words is "twenty billion, one hundred ten million, two hundred eleven thousand, two hundred eleven".