11261221102 has 16 divisors (see below), whose sum is σ = 17243762400. Its totient is φ = 5514107040.

The previous prime is 11261221091. The next prime is 11261221177. The reversal of 11261221102 is 20112216211.

It is a self number, because there is not a number n which added to its sum of digits gives 11261221102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173602 + ... + 229477.

It is an arithmetic number, because the mean of its divisors is an integer number (1077735150).

Almost surely, 2^11261221102 is an apocalyptic number.

11261221102 is a deficient number, since it is larger than the sum of its proper divisors (5982541298).

11261221102 is a wasteful number, since it uses less digits than its factorization.

11261221102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403371.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 11261221102 its reverse (20112216211), we get a palindrome (31373437313).

The spelling of 11261221102 in words is "eleven billion, two hundred sixty-one million, two hundred twenty-one thousand, one hundred two".