211111111102 has 32 divisors (see below), whose sum is σ = 332000501760. Its totient is φ = 100553127840.

The previous prime is 211111111091. The next prime is 211111111157. The reversal of 211111111102 is 201111111112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5959948 + ... + 5995264.

It is an arithmetic number, because the mean of its divisors is an integer number (10375015680).

Almost surely, 2^211111111102 is an apocalyptic number.

211111111102 is a deficient number, since it is larger than the sum of its proper divisors (120889390658).

211111111102 is a wasteful number, since it uses less digits than its factorization.

211111111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36856.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 211111111102 its reverse (201111111112), we get a palindrome (412222222214).

It can be divided in two parts, 21111111110 and 2, that added together give a palindrome (21111111112).

The spelling of 211111111102 in words is "two hundred eleven billion, one hundred eleven million, one hundred eleven thousand, one hundred two".