1020320201 has 2 divisors, whose sum is σ = 1020320202. Its totient is φ = 1020320200.

The previous prime is 1020320183. The next prime is 1020320207. The reversal of 1020320201 is 1020230201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1018567225 + 1752976 = 31915^2 + 1324^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020320201 - 2¹⁰ = 1020319177 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020320207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510160100 + 510160101.

It is an arithmetic number, because the mean of its divisors is an integer number (510160101).

Almost surely, 2^1020320201 is an apocalyptic number.

It is an amenable number.

1020320201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020320201 is an equidigital number, since it uses as much as digits as its factorization.

1020320201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1020320201 is about 31942.4513930913. The cubic root of 1020320201 is about 1006.7280323954.

Adding to 1020320201 its reverse (1020230201), we get a palindrome (2040550402).

Subtracting from 1020320201 its reverse (1020230201), we obtain a square (90000 = 300²).

The spelling of 1020320201 in words is "one billion, twenty million, three hundred twenty thousand, two hundred one".