13121231130 has 192 divisors, whose sum is σ = 41632081920. Its totient is φ = 2801893248.

The previous prime is 13121231099. The next prime is 13121231141. The reversal of 13121231130 is 3113212131.

13121231130 is a `hidden beast` number, since 1 + 312 + 12 + 311 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 612541 + ... + 633599.

It is an arithmetic number, because the mean of its divisors is an integer number (216833760).

Almost surely, 2^13121231130 is an apocalyptic number.

13121231130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13121231130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20816040960).

13121231130 is an abundant number, since it is smaller than the sum of its proper divisors (28510850790).

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

13121231130 is a wasteful number, since it uses less digits than its factorization.

13121231130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21145 (or 21142 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 13121231130 its reverse (3113212131), we get a palindrome (16234443261).

The spelling of 13121231130 in words is "thirteen billion, one hundred twenty-one million, two hundred thirty-one thousand, one hundred thirty".