21011133322 has 4 divisors (see below), whose sum is σ = 31516699986. Its totient is φ = 10505566660.

The previous prime is 21011133317. The next prime is 21011133343. The reversal of 21011133322 is 22333111012.

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., 10745188281 + 10265945041 = 103659^2 + 101321^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21011133322.

It is an unprimeable number.

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, 5252783329 + ... + 5252783332.

Almost surely, 2^21011133322 is an apocalyptic number.

21011133322 is a deficient number, since it is larger than the sum of its proper divisors (10505566664).

21011133322 is a wasteful number, since it uses less digits than its factorization.

21011133322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10505566663.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21011133322 its reverse (22333111012), we get a palindrome (43344244334).

The spelling of 21011133322 in words is "twenty-one billion, eleven million, one hundred thirty-three thousand, three hundred twenty-two".