11232101521 has 2 divisors, whose sum is σ = 11232101522. Its totient is φ = 11232101520.

The previous prime is 11232101519. The next prime is 11232101539. The reversal of 11232101521 is 12510123211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5846743296 + 5385358225 = 76464^2 + 73385^2 .

It is a cyclic number.

It is not a de Polignac number, because 11232101521 - 2¹ = 11232101519 is a prime.

Together with 11232101519, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11232108521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5616050760 + 5616050761.

It is an arithmetic number, because the mean of its divisors is an integer number (5616050761).

Almost surely, 2^11232101521 is an apocalyptic number.

It is an amenable number.

11232101521 is a deficient number, since it is larger than the sum of its proper divisors (1).

11232101521 is an equidigital number, since it uses as much as digits as its factorization.

11232101521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 19.

Adding to 11232101521 its reverse (12510123211), we get a palindrome (23742224732).

The spelling of 11232101521 in words is "eleven billion, two hundred thirty-two million, one hundred one thousand, five hundred twenty-one".