1201571200 has 96 divisors (see below), whose sum is σ = 3002319000. Its totient is φ = 475115520.

The previous prime is 1201571171. The next prime is 1201571207. The reversal of 1201571200 is 21751021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201571207) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 282691 + ... + 286909.

Almost surely, 2^1201571200 is an apocalyptic number.

1201571200 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 1201571200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1501159500).

1201571200 is an abundant number, since it is smaller than the sum of its proper divisors (1800747800).

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

1201571200 is an equidigital number, since it uses as much as digits as its factorization.

1201571200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4332 (or 4315 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 1201571200 is about 34663.6870514376. The cubic root of 1201571200 is about 1063.1221583394.

The spelling of 1201571200 in words is "one billion, two hundred one million, five hundred seventy-one thousand, two hundred".