20930201 has 2 divisors, whose sum is σ = 20930202. Its totient is φ = 20930200.

The previous prime is 20930183. The next prime is 20930209. The reversal of 20930201 is 10203902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18913801 + 2016400 = 4349^2 + 1420^2 .

It is a cyclic number.

It is not a de Polignac number, because 20930201 - 2¹⁰ = 20929177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20930201.

It is not a weakly prime, because it can be changed into another prime (20930209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10465100 + 10465101.

It is an arithmetic number, because the mean of its divisors is an integer number (10465101).

Almost surely, 2^20930201 is an apocalyptic number.

It is an amenable number.

20930201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20930201 is an equidigital number, since it uses as much as digits as its factorization.

20930201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 20930201 is about 4574.9536609675. The cubic root of 20930201 is about 275.5864114542.

The spelling of 20930201 in words is "twenty million, nine hundred thirty thousand, two hundred one".