1200212000 has 96 divisors (see below), whose sum is σ = 3175898544. Its totient is φ = 443136000.

The previous prime is 1200211997. The next prime is 1200212017. The reversal of 1200212000 is 2120021.

It can be written as a sum of positive squares in 8 ways, for example, as 559504 + 1199652496 = 748^2 + 34636^2 .

It is a Harshad number since it is a multiple of its sum of digits (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40460 + ... + 63540.

Almost surely, 2^1200212000 is an apocalyptic number.

1200212000 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 1200212000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1587949272).

1200212000 is an abundant number, since it is smaller than the sum of its proper divisors (1975686544).

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

1200212000 is a wasteful number, since it uses less digits than its factorization.

1200212000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23119 (or 23101 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 1200212000 is about 34644.0759726681. The cubic root of 1200212000 is about 1062.7211442802.

Adding to 1200212000 its reverse (2120021), we get a palindrome (1202332021).

The spelling of 1200212000 in words is "one billion, two hundred million, two hundred twelve thousand".