11211211122 has 64 divisors (see below), whose sum is σ = 23470414848. Its totient is φ = 3566808000.

The previous prime is 11211211111. The next prime is 11211211147. The reversal of 11211211122 is 22111211211.

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 31 ways as a sum of consecutive naturals, for example, 3324097 + ... + 3327467.

It is an arithmetic number, because the mean of its divisors is an integer number (366725232).

Almost surely, 2^11211211122 is an apocalyptic number.

11211211122 is an abundant number, since it is smaller than the sum of its proper divisors (12259203726).

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

11211211122 is a wasteful number, since it uses less digits than its factorization.

11211211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3695.

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

Adding to 11211211122 its reverse (22111211211), we get a palindrome (33322422333).

The spelling of 11211211122 in words is "eleven billion, two hundred eleven million, two hundred eleven thousand, one hundred twenty-two".