11121012010021 has 8 divisors (see below), whose sum is σ = 11132422646400. Its totient is φ = 11109602145600.

The previous prime is 11121012010019. The next prime is 11121012010057. The reversal of 11121012010021 is 12001021012111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11121012010021 - 2¹ = 11121012010019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11121012009983 and 11121012010010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121012010421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31254450 + ... + 31608268.

It is an arithmetic number, because the mean of its divisors is an integer number (1391552830800).

Almost surely, 2^{11121012010021} is an apocalyptic number.

It is an amenable number.

11121012010021 is a deficient number, since it is larger than the sum of its proper divisors (11410636379).

11121012010021 is a wasteful number, since it uses less digits than its factorization.

11121012010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385979.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11121012010021 its reverse (12001021012111), we get a palindrome (23122033022132).

The spelling of 11121012010021 in words is "eleven trillion, one hundred twenty-one billion, twelve million, ten thousand, twenty-one".