21300225466 has 8 divisors (see below), whose sum is σ = 34408056564. Its totient is φ = 9830873280.

The previous prime is 21300225461. The next prime is 21300225473. The reversal of 21300225466 is 66452200312.

It can be written as a sum of positive squares in 2 ways, for example, as 20748962025 + 551263441 = 144045^2 + 23479^2 .

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

It is not an unprimeable number, because it can be changed into a prime (21300225461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409619695 + ... + 409619746.

Almost surely, 2^21300225466 is an apocalyptic number.

21300225466 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21300225466 is a deficient number, since it is larger than the sum of its proper divisors (13107831098).

21300225466 is a wasteful number, since it uses less digits than its factorization.

21300225466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819239456.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 21300225466 its reverse (66452200312), we get a palindrome (87752425778).

The spelling of 21300225466 in words is "twenty-one billion, three hundred million, two hundred twenty-five thousand, four hundred sixty-six".