13220023355 has 24 divisors (see below), whose sum is σ = 20131720560. Its totient is φ = 8241051840.

The previous prime is 13220023351. The next prime is 13220023367. The reversal of 13220023355 is 55332002231.

It is not a de Polignac number, because 13220023355 - 2² = 13220023351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13220023351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2450000 + ... + 2455389.

It is an arithmetic number, because the mean of its divisors is an integer number (838821690).

Almost surely, 2^13220023355 is an apocalyptic number.

13220023355 is a deficient number, since it is larger than the sum of its proper divisors (6911697205).

13220023355 is a wasteful number, since it uses less digits than its factorization.

13220023355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4905419 (or 4905412 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 26.

Adding to 13220023355 its reverse (55332002231), we get a palindrome (68552025586).

The spelling of 13220023355 in words is "thirteen billion, two hundred twenty million, twenty-three thousand, three hundred fifty-five".