1223544552120 has 96 divisors (see below), whose sum is σ = 4338021607920. Its totient is φ = 296616860160.

The previous prime is 1223544552103. The next prime is 1223544552121. The reversal of 1223544552120 is 212554453221.

1223544552120 is a `hidden beast` number, since 1 + 2 + 23 + 54 + 45 + 521 + 20 = 666.

It is a super-3 number, since 3×1223544552120³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223544552121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 154483989 + ... + 154491908.

Almost surely, 2^{1223544552120} is an apocalyptic number.

1223544552120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223544552120 is an abundant number, since it is smaller than the sum of its proper divisors (3114477055800).

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

1223544552120 is a wasteful number, since it uses less digits than its factorization.

1223544552120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308975925 (or 308975918 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 1223544552120 in words is "one trillion, two hundred twenty-three billion, five hundred forty-four million, five hundred fifty-two thousand, one hundred twenty".