21122010303 has 16 divisors (see below), whose sum is σ = 28923804000. Its totient is φ = 13702545920.

The previous prime is 21122010289. The next prime is 21122010323. The reversal of 21122010303 is 30301022112.

It is a cyclic number.

It is not a de Polignac number, because 21122010303 - 2⁸ = 21122010047 is a prime.

It is a super-2 number, since 2×21122010303² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122010323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172878 + ... + 268571.

It is an arithmetic number, because the mean of its divisors is an integer number (1807737750).

Almost surely, 2^21122010303 is an apocalyptic number.

21122010303 is a deficient number, since it is larger than the sum of its proper divisors (7801793697).

21122010303 is a wasteful number, since it uses less digits than its factorization.

21122010303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441882.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21122010303 its reverse (30301022112), we get a palindrome (51423032415).

The spelling of 21122010303 in words is "twenty-one billion, one hundred twenty-two million, ten thousand, three hundred three".