1201320252 has 72 divisors (see below), whose sum is σ = 3318365232. Its totient is φ = 363417600.

The previous prime is 1201320247. The next prime is 1201320259. The reversal of 1201320252 is 2520231021.

1201320252 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201320259) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 265852 + ... + 270332.

It is an arithmetic number, because the mean of its divisors is an integer number (46088406).

Almost surely, 2^1201320252 is an apocalyptic number.

1201320252 is a gapful number since it is divisible by the number (12) 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 1201320252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1659182616).

1201320252 is an abundant number, since it is smaller than the sum of its proper divisors (2117044980).

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

1201320252 is a wasteful number, since it uses less digits than its factorization.

1201320252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5179 (or 5174 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1201320252 is about 34660.0671089945. The cubic root of 1201320252 is about 1063.0481422083.

Adding to 1201320252 its reverse (2520231021), we get a palindrome (3721551273).

The spelling of 1201320252 in words is "one billion, two hundred one million, three hundred twenty thousand, two hundred fifty-two".