15132300221 has 2 divisors, whose sum is σ = 15132300222. Its totient is φ = 15132300220.

The previous prime is 15132300203. The next prime is 15132300223. The reversal of 15132300221 is 12200323151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14940172900 + 192127321 = 122230^2 + 13861^2 .

It is a cyclic number.

It is not a de Polignac number, because 15132300221 - 2²² = 15128105917 is a prime.

Together with 15132300223, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 15132300193 and 15132300202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15132300223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7566150110 + 7566150111.

It is an arithmetic number, because the mean of its divisors is an integer number (7566150111).

Almost surely, 2^15132300221 is an apocalyptic number.

It is an amenable number.

15132300221 is a deficient number, since it is larger than the sum of its proper divisors (1).

15132300221 is an equidigital number, since it uses as much as digits as its factorization.

15132300221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 15132300221 its reverse (12200323151), we get a palindrome (27332623372).

The spelling of 15132300221 in words is "fifteen billion, one hundred thirty-two million, three hundred thousand, two hundred twenty-one".