1020512201 has 2 divisors, whose sum is σ = 1020512202. Its totient is φ = 1020512200.

The previous prime is 1020512177. The next prime is 1020512237. The reversal of 1020512201 is 1022150201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1006412176 + 14100025 = 31724^2 + 3755^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020512201 - 2⁶ = 1020512137 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020512501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510256100 + 510256101.

It is an arithmetic number, because the mean of its divisors is an integer number (510256101).

Almost surely, 2^1020512201 is an apocalyptic number.

It is an amenable number.

1020512201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020512201 is an equidigital number, since it uses as much as digits as its factorization.

1020512201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 1020512201 is about 31945.4566566202. The cubic root of 1020512201 is about 1006.7911758606.

Adding to 1020512201 its reverse (1022150201), we get a palindrome (2042662402).

The spelling of 1020512201 in words is "one billion, twenty million, five hundred twelve thousand, two hundred one".