21472506203 has 2 divisors, whose sum is σ = 21472506204. Its totient is φ = 21472506202.

The previous prime is 21472506179. The next prime is 21472506229. The reversal of 21472506203 is 30260527412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21472506203 - 2⁸ = 21472505947 is a prime.

It is a super-2 number, since 2×21472506203² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21472506203.

It is not a weakly prime, because it can be changed into another prime (21472506103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10736253101 + 10736253102.

It is an arithmetic number, because the mean of its divisors is an integer number (10736253102).

Almost surely, 2^21472506203 is an apocalyptic number.

21472506203 is a deficient number, since it is larger than the sum of its proper divisors (1).

21472506203 is an equidigital number, since it uses as much as digits as its factorization.

21472506203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 21472506203 in words is "twenty-one billion, four hundred seventy-two million, five hundred six thousand, two hundred three".