13011013220 has 24 divisors (see below), whose sum is σ = 27328371000. Its totient is φ = 5203406592.

The previous prime is 13011013199. The next prime is 13011013261. The reversal of 13011013220 is 2231011031.

It can be written as a sum of positive squares in 4 ways, for example, as 49646116 + 12961367104 = 7046^2 + 113848^2 .

It is a super-2 number, since 2×13011013220² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13011013195 and 13011013204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49286 + ... + 168674.

It is an arithmetic number, because the mean of its divisors is an integer number (1138682125).

Almost surely, 2^13011013220 is an apocalyptic number.

13011013220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13011013220 is an abundant number, since it is smaller than the sum of its proper divisors (14317357780).

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

13011013220 is a wasteful number, since it uses less digits than its factorization.

13011013220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124847 (or 124845 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 13011013220 its reverse (2231011031), we get a palindrome (15242024251).

The spelling of 13011013220 in words is "thirteen billion, eleven million, thirteen thousand, two hundred twenty".