1201013201 has 4 divisors (see below), whose sum is σ = 1220702004. Its totient is φ = 1181324400.

The previous prime is 1201013197. The next prime is 1201013207. The reversal of 1201013201 is 1023101021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 466603201 + 734410000 = 21601^2 + 27100^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201013201 - 2² = 1201013197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201013207) 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 3 ways as a sum of consecutive naturals, for example, 9844310 + ... + 9844431.

It is an arithmetic number, because the mean of its divisors is an integer number (305175501).

Almost surely, 2^1201013201 is an apocalyptic number.

It is an amenable number.

1201013201 is a deficient number, since it is larger than the sum of its proper divisors (19688803).

1201013201 is an equidigital number, since it uses as much as digits as its factorization.

1201013201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19688802.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1201013201 is about 34655.6373624840. The cubic root of 1201013201 is about 1062.9575646935.

Adding to 1201013201 its reverse (1023101021), we get a palindrome (2224114222).

The spelling of 1201013201 in words is "one billion, two hundred one million, thirteen thousand, two hundred one".