20331122443015 has 4 divisors (see below), whose sum is σ = 24397346931624. Its totient is φ = 16264897954408.

The previous prime is 20331122443007. The next prime is 20331122443127. The reversal of 20331122443015 is 51034422113302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20331122443015 - 2³ = 20331122443007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2033112244297 + ... + 2033112244306.

It is an arithmetic number, because the mean of its divisors is an integer number (6099336732906).

Almost surely, 2^{20331122443015} is an apocalyptic number.

20331122443015 is a deficient number, since it is larger than the sum of its proper divisors (4066224488609).

20331122443015 is an equidigital number, since it uses as much as digits as its factorization.

20331122443015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4066224488608.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 20331122443015 its reverse (51034422113302), we get a palindrome (71365544556317).

The spelling of 20331122443015 in words is "twenty trillion, three hundred thirty-one billion, one hundred twenty-two million, four hundred forty-three thousand, fifteen".