11121122012021 has 16 divisors (see below), whose sum is σ = 13379155820160. Its totient is φ = 9030440908800.

The previous prime is 11121122011963. The next prime is 11121122012137. The reversal of 11121122012021 is 12021022112111.

It is a cyclic number.

It is not a de Polignac number, because 11121122012021 - 2⁴² = 6723075500917 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 (11121122014021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3878621 + ... + 6106221.

It is an arithmetic number, because the mean of its divisors is an integer number (836197238760).

Almost surely, 2^{11121122012021} is an apocalyptic number.

It is an amenable number.

11121122012021 is a deficient number, since it is larger than the sum of its proper divisors (2258033808139).

11121122012021 is a wasteful number, since it uses less digits than its factorization.

11121122012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2265164.

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

Adding to 11121122012021 its reverse (12021022112111), we get a palindrome (23142144124132).

The spelling of 11121122012021 in words is "eleven trillion, one hundred twenty-one billion, one hundred twenty-two million, twelve thousand, twenty-one".