21430011226 has 8 divisors (see below), whose sum is σ = 34617710484. Its totient is φ = 9890774400.

The previous prime is 21430011223. The next prime is 21430011263. The reversal of 21430011226 is 62211003412.

It can be written as a sum of positive squares in 2 ways, for example, as 20956905225 + 473106001 = 144765^2 + 21751^2 .

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

It is a super-2 number, since 2×21430011226² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21430011197 and 21430011206.

It is not an unprimeable number, because it can be changed into a prime (21430011223) 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, 412115575 + ... + 412115626.

Almost surely, 2^21430011226 is an apocalyptic number.

21430011226 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21430011226 is a deficient number, since it is larger than the sum of its proper divisors (13187699258).

21430011226 is a wasteful number, since it uses less digits than its factorization.

21430011226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824231216.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21430011226 its reverse (62211003412), we get a palindrome (83641014638).

The spelling of 21430011226 in words is "twenty-one billion, four hundred thirty million, eleven thousand, two hundred twenty-six".