13223402403220 has 12 divisors (see below), whose sum is σ = 27769145046804. Its totient is φ = 5289360961280.

The previous prime is 13223402403181. The next prime is 13223402403229. The reversal of 13223402403220 is 2230420432231.

It can be written as a sum of positive squares in 2 ways, for example, as 8405754935824 + 4817647467396 = 2899268^2 + 2194914^2 .

It is a super-2 number, since 2×13223402403220² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13223402403229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330585060061 + ... + 330585060100.

It is an arithmetic number, because the mean of its divisors is an integer number (2314095420567).

Almost surely, 2^{13223402403220} is an apocalyptic number.

13223402403220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13223402403220 is an abundant number, since it is smaller than the sum of its proper divisors (14545742643584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13223402403220 is a wasteful number, since it uses less digits than its factorization.

13223402403220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661170120170 (or 661170120168 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 13223402403220 its reverse (2230420432231), we get a palindrome (15453822835451).

The spelling of 13223402403220 in words is "thirteen trillion, two hundred twenty-three billion, four hundred two million, four hundred three thousand, two hundred twenty".