1122121121021 has 12 divisors (see below), whose sum is σ = 1173093021408. Its totient is φ = 1073275772184.

The previous prime is 1122121120957. The next prime is 1122121121047. The reversal of 1122121121021 is 1201211212211.

It is not a de Polignac number, because 1122121121021 - 2⁶ = 1122121120957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122121121321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12419816 + ... + 12509838.

It is an arithmetic number, because the mean of its divisors is an integer number (97757751784).

Almost surely, 2^{1122121121021} is an apocalyptic number.

It is an amenable number.

1122121121021 is a deficient number, since it is larger than the sum of its proper divisors (50971900387).

1122121121021 is an equidigital number, since it uses as much as digits as its factorization.

1122121121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113632 (or 113609 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1122121121021 its reverse (1201211212211), we get a palindrome (2323332333232).

The spelling of 1122121121021 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-one million, one hundred twenty-one thousand, twenty-one".