11211051306 has 64 divisors (see below), whose sum is σ = 27615264768. Its totient is φ = 2954743488.

The previous prime is 11211051283. The next prime is 11211051311. The reversal of 11211051306 is 60315011211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 901825 + ... + 914171.

It is an arithmetic number, because the mean of its divisors is an integer number (431488512).

Almost surely, 2^11211051306 is an apocalyptic number.

11211051306 is an abundant number, since it is smaller than the sum of its proper divisors (16404213462).

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

11211051306 is a wasteful number, since it uses less digits than its factorization.

11211051306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14035.

The product of its (nonzero) digits is 180, while the sum is 21.

Adding to 11211051306 its reverse (60315011211), we get a palindrome (71526062517).

The spelling of 11211051306 in words is "eleven billion, two hundred eleven million, fifty-one thousand, three hundred six".