15231122201 has 4 divisors (see below), whose sum is σ = 15232069392. Its totient is φ = 15230175012.

The previous prime is 15231122197. The next prime is 15231122227. The reversal of 15231122201 is 10222113251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15231122201 - 2² = 15231122197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15231122281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449051 + ... + 481776.

It is an arithmetic number, because the mean of its divisors is an integer number (3808017348).

Almost surely, 2^15231122201 is an apocalyptic number.

It is an amenable number.

15231122201 is a deficient number, since it is larger than the sum of its proper divisors (947191).

15231122201 is an equidigital number, since it uses as much as digits as its factorization.

15231122201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947190.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 15231122201 its reverse (10222113251), we get a palindrome (25453235452).

The spelling of 15231122201 in words is "fifteen billion, two hundred thirty-one million, one hundred twenty-two thousand, two hundred one".