13121233110 has 24 divisors (see below), whose sum is σ = 34115206320. Its totient is φ = 3498995472.

The previous prime is 13121233061. The next prime is 13121233183. The reversal of 13121233110 is 1133212131.

13121233110 is a `hidden beast` number, since 1 + 312 + 12 + 331 + 10 = 666.

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

It is a congruent number.

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, 72895650 + ... + 72895829.

It is an arithmetic number, because the mean of its divisors is an integer number (1421466930).

Almost surely, 2^13121233110 is an apocalyptic number.

13121233110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13121233110 is an abundant number, since it is smaller than the sum of its proper divisors (20993973210).

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

13121233110 is a wasteful number, since it uses less digits than its factorization.

13121233110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145791492 (or 145791489 counting only the distinct ones).

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

Adding to 13121233110 its reverse (1133212131), we get a palindrome (14254445241).

The spelling of 13121233110 in words is "thirteen billion, one hundred twenty-one million, two hundred thirty-three thousand, one hundred ten".