1020301221 has 4 divisors (see below), whose sum is σ = 1360401632. Its totient is φ = 680200812.

The previous prime is 1020301207. The next prime is 1020301231. The reversal of 1020301221 is 1221030201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1020301221 - 2²³ = 1011912613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020301197 and 1020301206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020301201) 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, 170050201 + ... + 170050206.

It is an arithmetic number, because the mean of its divisors is an integer number (340100408).

Almost surely, 2^1020301221 is an apocalyptic number.

It is an amenable number.

1020301221 is a deficient number, since it is larger than the sum of its proper divisors (340100411).

1020301221 is an equidigital number, since it uses as much as digits as its factorization.

1020301221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340100410.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1020301221 is about 31942.1542949125. The cubic root of 1020301221 is about 1006.7217899706.

Adding to 1020301221 its reverse (1221030201), we get a palindrome (2241331422).

The spelling of 1020301221 in words is "one billion, twenty million, three hundred one thousand, two hundred twenty-one".