1121321101 has 2 divisors, whose sum is σ = 1121321102. Its totient is φ = 1121321100.

The previous prime is 1121321051. The next prime is 1121321111. The reversal of 1121321101 is 1011231211.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1031052100 + 90269001 = 32110^2 + 9501^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121321101 - 2¹¹ = 1121319053 is a prime.

It is a super-2 number, since 2×1121321101² = 2514722023095704402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121321111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560660550 + 560660551.

It is an arithmetic number, because the mean of its divisors is an integer number (560660551).

Almost surely, 2^1121321101 is an apocalyptic number.

It is an amenable number.

1121321101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121321101 is an equidigital number, since it uses as much as digits as its factorization.

1121321101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1121321101 is about 33486.1329657517. The cubic root of 1121321101 is about 1038.9069819026.

Adding to 1121321101 its reverse (1011231211), we get a palindrome (2132552312).

The spelling of 1121321101 in words is "one billion, one hundred twenty-one million, three hundred twenty-one thousand, one hundred one".