1201201000 has 32 divisors (see below), whose sum is σ = 2810812680. Its totient is φ = 480480000.

The previous prime is 1201200947. The next prime is 1201201003. The reversal of 1201201000 is 1021021.

It can be written as a sum of positive squares in 4 ways, for example, as 372567204 + 828633796 = 19302^2 + 28786^2 .

It is not an unprimeable number, because it can be changed into a prime (1201201003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599601 + ... + 601600.

Almost surely, 2^1201201000 is an apocalyptic number.

1201201000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201201000 is an abundant number, since it is smaller than the sum of its proper divisors (1609611680).

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

1201201000 is a wasteful number, since it uses less digits than its factorization.

1201201000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201222 (or 1201208 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 1201201000 is about 34658.3467580322. The cubic root of 1201201000 is about 1063.0129656843.

Adding to 1201201000 its reverse (1021021), we get a palindrome (1202222021).

The spelling of 1201201000 in words is "one billion, two hundred one million, two hundred one thousand".