11211111111102 has 32 divisors (see below), whose sum is σ = 25625598835200. Its totient is φ = 3203149351968.

The previous prime is 11211111111071. The next prime is 11211111111113. The reversal of 11211111111102 is 20111111111211.

It is a happy number.

11211111111102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 4710399 + ... + 6679077.

It is an arithmetic number, because the mean of its divisors is an integer number (800799963600).

Almost surely, 2^{11211111111102} is an apocalyptic number.

11211111111102 is an abundant number, since it is smaller than the sum of its proper divisors (14414487724098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11211111111102 is a wasteful number, since it uses less digits than its factorization.

11211111111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104280.

The product of its (nonzero) digits is 4, while the sum is 15.

Adding to 11211111111102 its reverse (20111111111211), we get a palindrome (31322222222313).

The spelling of 11211111111102 in words is "eleven trillion, two hundred eleven billion, one hundred eleven million, one hundred eleven thousand, one hundred two".