1121333021 has 2 divisors, whose sum is σ = 1121333022. Its totient is φ = 1121333020.

The previous prime is 1121332981. The next prime is 1121333027. The reversal of 1121333021 is 1203331211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1024704121 + 96628900 = 32011^2 + 9830^2 .

It is an emirp because it is prime and its reverse (1203331211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1121333021 - 2⁶ = 1121332957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121333027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560666510 + 560666511.

It is an arithmetic number, because the mean of its divisors is an integer number (560666511).

Almost surely, 2^1121333021 is an apocalyptic number.

It is an amenable number.

1121333021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121333021 is an equidigital number, since it uses as much as digits as its factorization.

1121333021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1121333021 is about 33486.3109494014. The cubic root of 1121333021 is about 1038.9106631934.

Adding to 1121333021 its reverse (1203331211), we get a palindrome (2324664232).

The spelling of 1121333021 in words is "one billion, one hundred twenty-one million, three hundred thirty-three thousand, twenty-one".