21330267226 has 4 divisors (see below), whose sum is σ = 31995400842. Its totient is φ = 10665133612.

The previous prime is 21330267223. The next prime is 21330267323. The reversal of 21330267226 is 62276203312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13959186201 + 7371081025 = 118149^2 + 85855^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21330267191 and 21330267200.

It is not an unprimeable number, because it can be changed into a prime (21330267223) 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 as a sum of consecutive naturals, namely, 5332566805 + ... + 5332566808.

Almost surely, 2^21330267226 is an apocalyptic number.

21330267226 is a deficient number, since it is larger than the sum of its proper divisors (10665133616).

21330267226 is a wasteful number, since it uses less digits than its factorization.

21330267226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10665133615.

The product of its (nonzero) digits is 36288, while the sum is 34.

The spelling of 21330267226 in words is "twenty-one billion, three hundred thirty million, two hundred sixty-seven thousand, two hundred twenty-six".