11211120121122 has 24 divisors (see below), whose sum is σ = 24292761128064. Its totient is φ = 3736732214904.

The previous prime is 11211120121081. The next prime is 11211120121151. The reversal of 11211120121122 is 22112102111211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11211120121095 and 11211120121104.

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, 25427478 + ... + 25864625.

It is an arithmetic number, because the mean of its divisors is an integer number (1012198380336).

Almost surely, 2^{11211120121122} is an apocalyptic number.

11211120121122 is an abundant number, since it is smaller than the sum of its proper divisors (13081641006942).

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

11211120121122 is a wasteful number, since it uses less digits than its factorization.

11211120121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51304254 (or 51304251 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11211120121122 its reverse (22112102111211), we get a palindrome (33323222232333).

The spelling of 11211120121122 in words is "eleven trillion, two hundred eleven billion, one hundred twenty million, one hundred twenty-one thousand, one hundred twenty-two".