1100213321 has 2 divisors, whose sum is σ = 1100213322. Its totient is φ = 1100213320.

The previous prime is 1100213249. The next prime is 1100213353. The reversal of 1100213321 is 1233120011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 631014400 + 469198921 = 25120^2 + 21661^2 .

It is an emirp because it is prime and its reverse (1233120011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1100213321 - 2¹⁰ = 1100212297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1100213296 and 1100213305.

It is not a weakly prime, because it can be changed into another prime (1100213371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550106660 + 550106661.

It is an arithmetic number, because the mean of its divisors is an integer number (550106661).

Almost surely, 2^1100213321 is an apocalyptic number.

It is an amenable number.

1100213321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100213321 is an equidigital number, since it uses as much as digits as its factorization.

1100213321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1100213321 is about 33169.4636827308. The cubic root of 1100213321 is about 1032.3468405452.

Adding to 1100213321 its reverse (1233120011), we get a palindrome (2333333332).

The spelling of 1100213321 in words is "one billion, one hundred million, two hundred thirteen thousand, three hundred twenty-one".