1223111040000 has 440 divisors, whose sum is σ = 4103944817280. Its totient is φ = 323745792000.

The previous prime is 1223111039999. The next prime is 1223111040001. The reversal of 1223111040000 is 401113221.

It is an interprime number because it is at equal distance from previous prime (1223111039999) and next prime (1223111040001).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223111040001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 266877709 + ... + 266882291.

It is an arithmetic number, because the mean of its divisors is an integer number (9327147312).

Almost surely, 2^{1223111040000} is an apocalyptic number.

1223111040000 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 1223111040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2051972408640).

1223111040000 is an abundant number, since it is smaller than the sum of its proper divisors (2880833777280).

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

1223111040000 is an equidigital number, since it uses as much as digits as its factorization.

1223111040000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4765 (or 4732 counting only the distinct ones).

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

Adding to 1223111040000 its reverse (401113221), we get a palindrome (1223512153221).

The spelling of 1223111040000 in words is "one trillion, two hundred twenty-three billion, one hundred eleven million, forty thousand".