13123223100 has 360 divisors, whose sum is σ = 48514113648. Its totient is φ = 3039897600.

The previous prime is 13123223081. The next prime is 13123223123. The reversal of 13123223100 is 132232131.

13123223100 is a `hidden beast` number, since 1 + 31 + 2 + 322 + 310 + 0 = 666.

It is a super-2 number, since 2×13123223100² (a number of 21 digits) contains 22 as substring.

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 119 ways as a sum of consecutive naturals, for example, 1786435 + ... + 1793765.

Almost surely, 2^13123223100 is an apocalyptic number.

13123223100 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 13123223100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24257056824).

13123223100 is an abundant number, since it is smaller than the sum of its proper divisors (35390890548).

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

13123223100 is a wasteful number, since it uses less digits than its factorization.

13123223100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7387 (or 7371 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13123223100 its reverse (132232131), we get a palindrome (13255455231).

The spelling of 13123223100 in words is "thirteen billion, one hundred twenty-three million, two hundred twenty-three thousand, one hundred".