21220011030303 has 24 divisors (see below), whose sum is σ = 32911235019936. Its totient is φ = 13126988313600.

The previous prime is 21220011030299. The next prime is 21220011030343. The reversal of 21220011030303 is 30303011002212.

21220011030303 is a `hidden beast` number, since 2 + 1 + 220 + 0 + 110 + 30 + 303 = 666.

It is not a de Polignac number, because 21220011030303 - 2² = 21220011030299 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21220011030343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 976699578 + ... + 976721303.

It is an arithmetic number, because the mean of its divisors is an integer number (1371301459164).

Almost surely, 2^{21220011030303} is an apocalyptic number.

21220011030303 is a deficient number, since it is larger than the sum of its proper divisors (11691223989633).

21220011030303 is a wasteful number, since it uses less digits than its factorization.

21220011030303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953420975 (or 1953420972 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21220011030303 its reverse (30303011002212), we get a palindrome (51523022032515).

The spelling of 21220011030303 in words is "twenty-one trillion, two hundred twenty billion, eleven million, thirty thousand, three hundred three".