11031322021021 has 4 divisors (see below), whose sum is σ = 11035388121052. Its totient is φ = 11027255920992.

The previous prime is 11031322020973. The next prime is 11031322021063. The reversal of 11031322021021 is 12012022313011.

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 10889505005625 + 141817015396 = 3299925^2 + 376586^2 .

It is a cyclic number.

It is not a de Polignac number, because 11031322021021 - 2³¹ = 11029174537373 is a prime.

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 11031322021021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031322021081) 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, 2033045946 + ... + 2033051371.

It is an arithmetic number, because the mean of its divisors is an integer number (2758847030263).

Almost surely, 2^{11031322021021} is an apocalyptic number.

It is an amenable number.

11031322021021 is a deficient number, since it is larger than the sum of its proper divisors (4066100031).

11031322021021 is an equidigital number, since it uses as much as digits as its factorization.

11031322021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066100030.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 11031322021021 its reverse (12012022313011), we get a palindrome (23043344334032).

The spelling of 11031322021021 in words is "eleven trillion, thirty-one billion, three hundred twenty-two million, twenty-one thousand, twenty-one".