1001000223000 has 192 divisors, whose sum is σ = 3384085068000. Its totient is φ = 266877830400.

The previous prime is 1001000222993. The next prime is 1001000223017. The reversal of 1001000223000 is 3220001001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61218826 + ... + 61235174.

Almost surely, 2^{1001000223000} is an apocalyptic number.

1001000223000 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 1001000223000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1692042534000).

1001000223000 is an abundant number, since it is smaller than the sum of its proper divisors (2383084845000).

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

1001000223000 is a wasteful number, since it uses less digits than its factorization.

1001000223000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23179 (or 23162 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 1001000223000 its reverse (3220001001), we get a palindrome (1004220224001).

The spelling of 1001000223000 in words is "one trillion, one billion, two hundred twenty-three thousand".