21232056203 has 2 divisors, whose sum is σ = 21232056204. Its totient is φ = 21232056202.

The previous prime is 21232056199. The next prime is 21232056253. The reversal of 21232056203 is 30265023212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21232056203 - 2² = 21232056199 is a prime.

It is not a weakly prime, because it can be changed into another prime (21232056253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616028101 + 10616028102.

It is an arithmetic number, because the mean of its divisors is an integer number (10616028102).

Almost surely, 2^21232056203 is an apocalyptic number.

21232056203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21232056203 is an equidigital number, since it uses as much as digits as its factorization.

21232056203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 21232056203 its reverse (30265023212), we get a palindrome (51497079415).

The spelling of 21232056203 in words is "twenty-one billion, two hundred thirty-two million, fifty-six thousand, two hundred three".