1200212123000 has 128 divisors (see below), whose sum is σ = 3064500354240. Its totient is φ = 436343040000.

The previous prime is 1200212122969. The next prime is 1200212123021. The reversal of 1200212123000 is 3212120021.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64681724 + ... + 64700276.

Almost surely, 2^{1200212123000} is an apocalyptic number.

1200212123000 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 1200212123000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1532250177120).

1200212123000 is an abundant number, since it is smaller than the sum of its proper divisors (1864288231240).

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

1200212123000 is a wasteful number, since it uses less digits than its factorization.

1200212123000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24466 (or 24452 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 1200212123000 its reverse (3212120021), we get a palindrome (1203424243021).

The spelling of 1200212123000 in words is "one trillion, two hundred billion, two hundred twelve million, one hundred twenty-three thousand".