21302103201 has 4 divisors (see below), whose sum is σ = 28402804272. Its totient is φ = 14201402132.

The previous prime is 21302103197. The next prime is 21302103241. The reversal of 21302103201 is 10230120312.

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 21302103201 - 2² = 21302103197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21302103241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3550350531 + ... + 3550350536.

It is an arithmetic number, because the mean of its divisors is an integer number (7100701068).

Almost surely, 2^21302103201 is an apocalyptic number.

It is an amenable number.

21302103201 is a deficient number, since it is larger than the sum of its proper divisors (7100701071).

21302103201 is an equidigital number, since it uses as much as digits as its factorization.

21302103201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7100701070.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21302103201 its reverse (10230120312), we get a palindrome (31532223513).

The spelling of 21302103201 in words is "twenty-one billion, three hundred two million, one hundred three thousand, two hundred one".