11211112122 has 32 divisors (see below), whose sum is σ = 25668669312. Its totient is φ = 3197766144.

The previous prime is 11211112097. The next prime is 11211112139. The reversal of 11211112122 is 22121111211.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

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, 200163 + ... + 249974.

It is an arithmetic number, because the mean of its divisors is an integer number (802145916).

Almost surely, 2^11211112122 is an apocalyptic number.

11211112122 is an abundant number, since it is smaller than the sum of its proper divisors (14457557190).

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

11211112122 is a wasteful number, since it uses less digits than its factorization.

11211112122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450742.

The product of its digits is 16, while the sum is 15.

Adding to 11211112122 its reverse (22121111211), we get a palindrome (33332223333).

The spelling of 11211112122 in words is "eleven billion, two hundred eleven million, one hundred twelve thousand, one hundred twenty-two".