11212120122 has 24 divisors (see below), whose sum is σ = 26085341376. Its totient is φ = 3203462808.

The previous prime is 11212120091. The next prime is 11212120133. The reversal of 11212120122 is 22102121211.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19067938 + ... + 19068525.

It is an arithmetic number, because the mean of its divisors is an integer number (1086889224).

Almost surely, 2^11212120122 is an apocalyptic number.

11212120122 is an abundant number, since it is smaller than the sum of its proper divisors (14873221254).

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

11212120122 is a wasteful number, since it uses less digits than its factorization.

11212120122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38136482 (or 38136475 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11212120122 its reverse (22102121211), we get a palindrome (33314241333).

The spelling of 11212120122 in words is "eleven billion, two hundred twelve million, one hundred twenty thousand, one hundred twenty-two".