1122120111021 has 24 divisors (see below), whose sum is σ = 1874310518304. Its totient is φ = 591887530080.

The previous prime is 1122120111019. The next prime is 1122120111029. The reversal of 1122120111021 is 1201110212211.

It is a happy number.

It is not a de Polignac number, because 1122120111021 - 2¹ = 1122120111019 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122120111029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 293593095 + ... + 293596916.

It is an arithmetic number, because the mean of its divisors is an integer number (78096271596).

Almost surely, 2^{1122120111021} is an apocalyptic number.

It is an amenable number.

1122120111021 is a deficient number, since it is larger than the sum of its proper divisors (752190407283).

1122120111021 is a wasteful number, since it uses less digits than its factorization.

1122120111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587190041 (or 587190034 counting only the distinct ones).

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

Adding to 1122120111021 its reverse (1201110212211), we get a palindrome (2323230323232).

The spelling of 1122120111021 in words is "one trillion, one hundred twenty-two billion, one hundred twenty million, one hundred eleven thousand, twenty-one".