21272024203 has 2 divisors, whose sum is σ = 21272024204. Its totient is φ = 21272024202.

The previous prime is 21272024177. The next prime is 21272024239. The reversal of 21272024203 is 30242027212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21272024203 - 2⁵ = 21272024171 is a prime.

It is a super-3 number, since 3×21272024203³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (21272024003) 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 as a sum of consecutive naturals, namely, 10636012101 + 10636012102.

It is an arithmetic number, because the mean of its divisors is an integer number (10636012102).

Almost surely, 2^21272024203 is an apocalyptic number.

21272024203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21272024203 is an equidigital number, since it uses as much as digits as its factorization.

21272024203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 25.

The spelling of 21272024203 in words is "twenty-one billion, two hundred seventy-two million, twenty-four thousand, two hundred three".