11113233421021 has 32 divisors (see below), whose sum is σ = 11879541273600. Its totient is φ = 10366362685440.

The previous prime is 11113233421019. The next prime is 11113233421057. The reversal of 11113233421021 is 12012433231111.

It is a cyclic number.

It is not a de Polignac number, because 11113233421021 - 2¹ = 11113233421019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11113233421091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 341603526 + ... + 341636056.

It is an arithmetic number, because the mean of its divisors is an integer number (371235664800).

Almost surely, 2^{11113233421021} is an apocalyptic number.

It is an amenable number.

11113233421021 is a deficient number, since it is larger than the sum of its proper divisors (766307852579).

11113233421021 is a wasteful number, since it uses less digits than its factorization.

11113233421021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33649.

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 11113233421021 its reverse (12012433231111), we get a palindrome (23125666652132).

The spelling of 11113233421021 in words is "eleven trillion, one hundred thirteen billion, two hundred thirty-three million, four hundred twenty-one thousand, twenty-one".