1223005555200 has 960 divisors, whose sum is σ = 4769261747712. Its totient is φ = 272365977600.

The previous prime is 1223005555169. The next prime is 1223005555201. The reversal of 1223005555200 is 25555003221.

It is a tau number, because it is divible by the number of its divisors (960).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1223005555201) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1554009207 + ... + 1554009993.

Almost surely, 2^{1223005555200} is an apocalyptic number.

1223005555200 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 1223005555200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2384630873856).

1223005555200 is an abundant number, since it is smaller than the sum of its proper divisors (3546256192512).

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

1223005555200 is a wasteful number, since it uses less digits than its factorization.

1223005555200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125 (or 1104 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The spelling of 1223005555200 in words is "one trillion, two hundred twenty-three billion, five million, five hundred fifty-five thousand, two hundred".