11331122012021 has 4 divisors (see below), whose sum is σ = 12949853728032. Its totient is φ = 9712390296012.

The previous prime is 11331122011981. The next prime is 11331122012107. The reversal of 11331122012021 is 12021022113311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11331122012021 - 2²² = 11331117817717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11331122011984 and 11331122012002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331122012921) 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 3 ways as a sum of consecutive naturals, for example, 809365857995 + ... + 809365858008.

It is an arithmetic number, because the mean of its divisors is an integer number (3237463432008).

Almost surely, 2^{11331122012021} is an apocalyptic number.

It is an amenable number.

11331122012021 is a deficient number, since it is larger than the sum of its proper divisors (1618731716011).

11331122012021 is an equidigital number, since it uses as much as digits as its factorization.

11331122012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618731716010.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 11331122012021 its reverse (12021022113311), we get a palindrome (23352144125332).

The spelling of 11331122012021 in words is "eleven trillion, three hundred thirty-one billion, one hundred twenty-two million, twelve thousand, twenty-one".