13123112220000 has 360 divisors, whose sum is σ = 46903305312864. Its totient is φ = 3479260032000.

The previous prime is 13123112219977. The next prime is 13123112220037. The reversal of 13123112220000 is 2221132131.

13123112220000 is a `hidden beast` number, since 1 + 312 + 31 + 122 + 200 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

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 59 ways as a sum of consecutive naturals, for example, 30929289 + ... + 31350711.

Almost surely, 2^{13123112220000} is an apocalyptic number.

13123112220000 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 13123112220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23451652656432).

13123112220000 is an abundant number, since it is smaller than the sum of its proper divisors (33780193092864).

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

13123112220000 is a wasteful number, since it uses less digits than its factorization.

13123112220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421632 (or 421606 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13123112220000 its reverse (2221132131), we get a palindrome (13125333352131).

The spelling of 13123112220000 in words is "thirteen trillion, one hundred twenty-three billion, one hundred twelve million, two hundred twenty thousand".