13101123220 has 24 divisors (see below), whose sum is σ = 27583101000. Its totient is φ = 5226974592.

The previous prime is 13101123197. The next prime is 13101123223. The reversal of 13101123220 is 2232110131.

It can be written as a sum of positive squares in 4 ways, for example, as 2907797776 + 10193325444 = 53924^2 + 100962^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13101123194 and 13101123203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13101123223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 834195 + ... + 849754.

It is an arithmetic number, because the mean of its divisors is an integer number (1149295875).

Almost surely, 2^13101123220 is an apocalyptic number.

13101123220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13101123220 is an abundant number, since it is smaller than the sum of its proper divisors (14481977780).

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

13101123220 is a wasteful number, since it uses less digits than its factorization.

13101123220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684347 (or 1684345 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13101123220 its reverse (2232110131), we get a palindrome (15333233351).

The spelling of 13101123220 in words is "thirteen billion, one hundred one million, one hundred twenty-three thousand, two hundred twenty".