11135230621 has 2 divisors, whose sum is σ = 11135230622. Its totient is φ = 11135230620.

The previous prime is 11135230619. The next prime is 11135230637. The reversal of 11135230621 is 12603253111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11037813721 + 97416900 = 105061^2 + 9870^2 .

It is a cyclic number.

It is not a de Polignac number, because 11135230621 - 2¹ = 11135230619 is a prime.

Together with 11135230619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11135230121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5567615310 + 5567615311.

It is an arithmetic number, because the mean of its divisors is an integer number (5567615311).

Almost surely, 2^11135230621 is an apocalyptic number.

It is an amenable number.

11135230621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11135230621 is an equidigital number, since it uses as much as digits as its factorization.

11135230621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 11135230621 its reverse (12603253111), we get a palindrome (23738483732).

The spelling of 11135230621 in words is "eleven billion, one hundred thirty-five million, two hundred thirty thousand, six hundred twenty-one".