1121001222000 has 640 divisors, whose sum is σ = 4005589625856. Its totient is φ = 267456000000.

The previous prime is 1121001221999. The next prime is 1121001222071. The reversal of 1121001222000 is 2221001211.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1406525602 + ... + 1406526398.

Almost surely, 2^{1121001222000} is an apocalyptic number.

1121001222000 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 1121001222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2002794812928).

1121001222000 is an abundant number, since it is smaller than the sum of its proper divisors (2884588403856).

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

1121001222000 is a wasteful number, since it uses less digits than its factorization.

1121001222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146 (or 1130 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1121001222000 its reverse (2221001211), we get a palindrome (1123222223211).

The spelling of 1121001222000 in words is "one trillion, one hundred twenty-one billion, one million, two hundred twenty-two thousand".