21320030103 has 8 divisors (see below), whose sum is σ = 28427528688. Its totient is φ = 14212942464.

The previous prime is 21320030101. The next prime is 21320030183. The reversal of 21320030103 is 30103002312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21320030103 - 2¹ = 21320030101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21320030101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51325 + ... + 212777.

It is an arithmetic number, because the mean of its divisors is an integer number (3553441086).

Almost surely, 2^21320030103 is an apocalyptic number.

21320030103 is a deficient number, since it is larger than the sum of its proper divisors (7107498585).

21320030103 is a wasteful number, since it uses less digits than its factorization.

21320030103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205473.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21320030103 its reverse (30103002312), we get a palindrome (51423032415).

The spelling of 21320030103 in words is "twenty-one billion, three hundred twenty million, thirty thousand, one hundred three".