215221343103 has 12 divisors (see below), whose sum is σ = 334788756120. Its totient is φ = 132443903376.

The previous prime is 215221343063. The next prime is 215221343159. The reversal of 215221343103 is 301343122512.

215221343103 is a `hidden beast` number, since 2 + 1 + 5 + 221 + 3 + 431 + 0 + 3 = 666.

215221343103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 215221343103 - 2¹⁸ = 215221080959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215221343303) 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 11 ways as a sum of consecutive naturals, for example, 919749213 + ... + 919749446.

It is an arithmetic number, because the mean of its divisors is an integer number (27899063010).

Almost surely, 2^215221343103 is an apocalyptic number.

215221343103 is a deficient number, since it is larger than the sum of its proper divisors (119567413017).

215221343103 is a wasteful number, since it uses less digits than its factorization.

215221343103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839498678 (or 1839498675 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 215221343103 its reverse (301343122512), we get a palindrome (516564465615).

The spelling of 215221343103 in words is "two hundred fifteen billion, two hundred twenty-one million, three hundred forty-three thousand, one hundred three".