13011101220 has 96 divisors (see below), whose sum is σ = 39258793728. Its totient is φ = 3200666112.

The previous prime is 13011101189. The next prime is 13011101269. The reversal of 13011101220 is 2210111031.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 13011101196 and 13011101205.

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, 1459617 + ... + 1468503.

It is an arithmetic number, because the mean of its divisors is an integer number (408945768).

Almost surely, 2^13011101220 is an apocalyptic number.

13011101220 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 13011101220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19629396864).

13011101220 is an abundant number, since it is smaller than the sum of its proper divisors (26247692508).

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

13011101220 is a wasteful number, since it uses less digits than its factorization.

13011101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10789 (or 10787 counting only the distinct ones).

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

Adding to 13011101220 its reverse (2210111031), we get a palindrome (15221212251).

The spelling of 13011101220 in words is "thirteen billion, eleven million, one hundred one thousand, two hundred twenty".