1223018356000 has 192 divisors, whose sum is σ = 3518000688384. Its totient is φ = 409092864000.

The previous prime is 1223018355997. The next prime is 1223018356073. The reversal of 1223018356000 is 6538103221.

It is a super-2 number, since 2×1223018356000² (a number of 25 digits) contains 22 as substring.

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, 615327 + ... + 1680673.

It is an arithmetic number, because the mean of its divisors is an integer number (18322920252).

Almost surely, 2^{1223018356000} is an apocalyptic number.

1223018356000 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 1223018356000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1759000344192).

1223018356000 is an abundant number, since it is smaller than the sum of its proper divisors (2294982332384).

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

1223018356000 is a wasteful number, since it uses less digits than its factorization.

1223018356000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065420 (or 1065402 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 1223018356000 in words is "one trillion, two hundred twenty-three billion, eighteen million, three hundred fifty-six thousand".