11153221511 has 2 divisors, whose sum is σ = 11153221512. Its totient is φ = 11153221510.

The previous prime is 11153221487. The next prime is 11153221523. The reversal of 11153221511 is 11512235111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11153221511 - 2¹⁰ = 11153220487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11153220511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5576610755 + 5576610756.

It is an arithmetic number, because the mean of its divisors is an integer number (5576610756).

Almost surely, 2^11153221511 is an apocalyptic number.

11153221511 is a deficient number, since it is larger than the sum of its proper divisors (1).

11153221511 is an equidigital number, since it uses as much as digits as its factorization.

11153221511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 300, while the sum is 23.

Adding to 11153221511 its reverse (11512235111), we get a palindrome (22665456622).

The spelling of 11153221511 in words is "eleven billion, one hundred fifty-three million, two hundred twenty-one thousand, five hundred eleven".