1151021 has 2 divisors, whose sum is σ = 1151022. Its totient is φ = 1151020.

The previous prime is 1150987. The next prime is 1151041. The reversal of 1151021 is 1201511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 784996 + 366025 = 886^2 + 605^2 .

It is a cyclic number.

It is not a de Polignac number, because 1151021 - 2⁶ = 1150957 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1150993 and 1151011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1151041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 575510 + 575511.

It is an arithmetic number, because the mean of its divisors is an integer number (575511).

2^1151021 is an apocalyptic number.

It is an amenable number.

1151021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1151021 is an equidigital number, since it uses as much as digits as its factorization.

1151021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10, while the sum is 11.

The square root of 1151021 is about 1072.8564675668. The cubic root of 1151021 is about 104.7999516831.

Adding to 1151021 its reverse (1201511), we get a palindrome (2352532).

The spelling of 1151021 in words is "one million, one hundred fifty-one thousand, twenty-one".