11331122101021 has 4 divisors (see below), whose sum is σ = 11332318259772. Its totient is φ = 11329925942272.

The previous prime is 11331122101001. The next prime is 11331122101073. The reversal of 11331122101021 is 12010122113311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8049278265625 + 3281843835396 = 2837125^2 + 1811586^2 .

It is a cyclic number.

It is not a de Polignac number, because 11331122101021 - 2⁵ = 11331122100989 is a prime.

It is a super-2 number, since 2×11331122101021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11331122101021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11331122101001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598065166 + ... + 598084111.

It is an arithmetic number, because the mean of its divisors is an integer number (2833079564943).

Almost surely, 2^{11331122101021} is an apocalyptic number.

It is an amenable number.

11331122101021 is a deficient number, since it is larger than the sum of its proper divisors (1196158751).

11331122101021 is an equidigital number, since it uses as much as digits as its factorization.

11331122101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196158750.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 11331122101021 its reverse (12010122113311), we get a palindrome (23341244214332).

The spelling of 11331122101021 in words is "eleven trillion, three hundred thirty-one billion, one hundred twenty-two million, one hundred one thousand, twenty-one".