11133021257 has 2 divisors, whose sum is σ = 11133021258. Its totient is φ = 11133021256.

The previous prime is 11133021073. The next prime is 11133021259. The reversal of 11133021257 is 75212033111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9054664336 + 2078356921 = 95156^2 + 45589^2 .

It is an emirp because it is prime and its reverse (75212033111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11133021257 - 2²² = 11128826953 is a prime.

Together with 11133021259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11133021259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5566510628 + 5566510629.

It is an arithmetic number, because the mean of its divisors is an integer number (5566510629).

Almost surely, 2^11133021257 is an apocalyptic number.

It is an amenable number.

11133021257 is a deficient number, since it is larger than the sum of its proper divisors (1).

11133021257 is an equidigital number, since it uses as much as digits as its factorization.

11133021257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 26.

Adding to 11133021257 its reverse (75212033111), we get a palindrome (86345054368).

The spelling of 11133021257 in words is "eleven billion, one hundred thirty-three million, twenty-one thousand, two hundred fifty-seven".