13121213130 has 24 divisors (see below), whose sum is σ = 34115154372. Its totient is φ = 3498990144.

The previous prime is 13121213107. The next prime is 13121213143. The reversal of 13121213130 is 3131212131.

It can be written as a sum of positive squares in 2 ways, for example, as 13093996041 + 27217089 = 114429^2 + 5217^2 .

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 11 ways as a sum of consecutive naturals, for example, 72895539 + ... + 72895718.

Almost surely, 2^13121213130 is an apocalyptic number.

13121213130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13121213130 is an abundant number, since it is smaller than the sum of its proper divisors (20993941242).

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

13121213130 is a wasteful number, since it uses less digits than its factorization.

13121213130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145791270 (or 145791267 counting only the distinct ones).

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

Adding to 13121213130 its reverse (3131212131), we get a palindrome (16252425261).

Subtracting from 13121213130 its reverse (3131212131), we obtain a palindrome (9990000999).

The spelling of 13121213130 in words is "thirteen billion, one hundred twenty-one million, two hundred thirteen thousand, one hundred thirty".