1100322331021 has 2 divisors, whose sum is σ = 1100322331022. Its totient is φ = 1100322331020.

The previous prime is 1100322331013. The next prime is 1100322331039. The reversal of 1100322331021 is 1201332230011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1099538890921 + 783440100 = 1048589^2 + 27990^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100322331021 - 2³ = 1100322331013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1100322331021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100322331921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550161165510 + 550161165511.

It is an arithmetic number, because the mean of its divisors is an integer number (550161165511).

Almost surely, 2^{1100322331021} is an apocalyptic number.

It is an amenable number.

1100322331021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100322331021 is an equidigital number, since it uses as much as digits as its factorization.

1100322331021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1100322331021 its reverse (1201332230011), we get a palindrome (2301654561032).

The spelling of 1100322331021 in words is "one trillion, one hundred billion, three hundred twenty-two million, three hundred thirty-one thousand, twenty-one".