1223100120120 has 128 divisors (see below), whose sum is σ = 3755822653440. Its totient is φ = 318473971200.

The previous prime is 1223100120103. The next prime is 1223100120161. The reversal of 1223100120120 is 210210013221.

It is a super-3 number, since 3×1223100120120³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1223100120120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16997257 + ... + 17069063.

It is an arithmetic number, because the mean of its divisors is an integer number (29342364480).

Almost surely, 2^{1223100120120} is an apocalyptic number.

1223100120120 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 1223100120120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1877911326720).

1223100120120 is an abundant number, since it is smaller than the sum of its proper divisors (2532722533320).

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

1223100120120 is a wasteful number, since it uses less digits than its factorization.

1223100120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75165 (or 75161 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1223100120120 its reverse (210210013221), we get a palindrome (1433310133341).

The spelling of 1223100120120 in words is "one trillion, two hundred twenty-three billion, one hundred million, one hundred twenty thousand, one hundred twenty".