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20222201 is a prime number
BaseRepresentation
bin100110100100…
…1000011111001
31102001101122102
41031021003321
520134102301
62001233145
7333612566
oct115110371
942041572
1020222201
111046226a
1269327b5
1342605cc
14298586d
151b96b6b
hex13490f9

20222201 has 2 divisors, whose sum is σ = 20222202. Its totient is φ = 20222200.

The previous prime is 20222179. The next prime is 20222207. The reversal of 20222201 is 10222202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18696976 + 1525225 = 4324^2 + 1235^2 .

It is a cyclic number.

It is not a de Polignac number, because 20222201 - 222 = 16027897 is a prime.

It is not a weakly prime, because it can be changed into another prime (20222207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111100 + 10111101.

It is an arithmetic number, because the mean of its divisors is an integer number (10111101).

Almost surely, 220222201 is an apocalyptic number.

It is an amenable number.

20222201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20222201 is an equidigital number, since it uses as much as digits as its factorization.

20222201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 20222201 is about 4496.9101614331. The cubic root of 20222201 is about 272.4433055468.

Adding to 20222201 its reverse (10222202), we get a palindrome (30444403).

Subtracting from 20222201 its reverse (10222202), we obtain a palindrome (9999999).

The spelling of 20222201 in words is "twenty million, two hundred twenty-two thousand, two hundred one".