1013021201 has 4 divisors (see below), whose sum is σ = 1013090100. Its totient is φ = 1012952304.

The previous prime is 1013021183. The next prime is 1013021203. The reversal of 1013021201 is 1021203101.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 475894225 + 537126976 = 21815^2 + 23176^2 .

It is a cyclic number.

It is not a de Polignac number, because 1013021201 - 2⁶ = 1013021137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1013021203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2546 + ... + 45083.

It is an arithmetic number, because the mean of its divisors is an integer number (253272525).

Almost surely, 2^1013021201 is an apocalyptic number.

It is an amenable number.

1013021201 is a deficient number, since it is larger than the sum of its proper divisors (68899).

1013021201 is an equidigital number, since it uses as much as digits as its factorization.

1013021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68898.

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

The square root of 1013021201 is about 31827.9939832846. The cubic root of 1013021201 is about 1004.3216963683.

Adding to 1013021201 its reverse (1021203101), we get a palindrome (2034224302).

The spelling of 1013021201 in words is "one billion, thirteen million, twenty-one thousand, two hundred one".