1135151021 has 4 divisors (see below), whose sum is σ = 1135259100. Its totient is φ = 1135042944.

The previous prime is 1135151011. The next prime is 1135151033. The reversal of 1135151021 is 1201515311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 285136996 + 850014025 = 16886^2 + 29155^2 .

It is a cyclic number.

It is not a de Polignac number, because 1135151021 - 2¹⁰ = 1135149997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1135150984 and 1135151002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135151011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36356 + ... + 59933.

It is an arithmetic number, because the mean of its divisors is an integer number (283814775).

Almost surely, 2^1135151021 is an apocalyptic number.

It is an amenable number.

1135151021 is a deficient number, since it is larger than the sum of its proper divisors (108079).

1135151021 is an equidigital number, since it uses as much as digits as its factorization.

1135151021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108078.

The product of its (nonzero) digits is 150, while the sum is 20.

The square root of 1135151021 is about 33692.0023299299. The cubic root of 1135151021 is about 1043.1606942375.

Adding to 1135151021 its reverse (1201515311), we get a palindrome (2336666332).

The spelling of 1135151021 in words is "one billion, one hundred thirty-five million, one hundred fifty-one thousand, twenty-one".