1168262021 has 2 divisors, whose sum is σ = 1168262022. Its totient is φ = 1168262020.

The previous prime is 1168261993. The next prime is 1168262047. The reversal of 1168262021 is 1202628611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 616528900 + 551733121 = 24830^2 + 23489^2 .

It is an emirp because it is prime and its reverse (1202628611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1168262021 - 2⁶ = 1168261957 is a prime.

It is a super-2 number, since 2×1168262021² = 2729672299422008882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1168462021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 584131010 + 584131011.

It is an arithmetic number, because the mean of its divisors is an integer number (584131011).

Almost surely, 2^1168262021 is an apocalyptic number.

It is an amenable number.

1168262021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1168262021 is an equidigital number, since it uses as much as digits as its factorization.

1168262021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 1168262021 is about 34179.8481711081. The cubic root of 1168262021 is about 1053.2062301792.

The spelling of 1168262021 in words is "one billion, one hundred sixty-eight million, two hundred sixty-two thousand, twenty-one".