11211211211102 has 48 divisors (see below), whose sum is σ = 20239299491760. Its totient is φ = 4638591482112.

The previous prime is 11211211211047. The next prime is 11211211211111. The reversal of 11211211211102 is 20111211211211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25138118 + ... + 25580214.

It is an arithmetic number, because the mean of its divisors is an integer number (421652072745).

Almost surely, 2^{11211211211102} is an apocalyptic number.

11211211211102 is a deficient number, since it is larger than the sum of its proper divisors (9028088280658).

11211211211102 is a wasteful number, since it uses less digits than its factorization.

11211211211102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451065 (or 451058 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11211211211102 its reverse (20111211211211), we get a palindrome (31322422422313).

The spelling of 11211211211102 in words is "eleven trillion, two hundred eleven billion, two hundred eleven million, two hundred eleven thousand, one hundred two".