13100001220 has 96 divisors (see below), whose sum is σ = 28912101120. Its totient is φ = 4979197440.

The previous prime is 13100001197. The next prime is 13100001241. The reversal of 13100001220 is 2210000131.

It is a super-2 number, since 2×13100001220² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 13100001197 and 13100001206.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24214150 + ... + 24214690.

It is an arithmetic number, because the mean of its divisors is an integer number (301167720).

Almost surely, 2^13100001220 is an apocalyptic number.

13100001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13100001220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14456050560).

13100001220 is an abundant number, since it is smaller than the sum of its proper divisors (15812099900).

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

13100001220 is a wasteful number, since it uses less digits than its factorization.

13100001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165 (or 1163 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 13100001220 its reverse (2210000131), we get a palindrome (15310001351).

The spelling of 13100001220 in words is "thirteen billion, one hundred million, one thousand, two hundred twenty".