212120201 has 2 divisors, whose sum is σ = 212120202. Its totient is φ = 212120200.

The previous prime is 212120189. The next prime is 212120221. The reversal of 212120201 is 102021212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205176976 + 6943225 = 14324^2 + 2635^2 .

It is a cyclic number.

It is not a de Polignac number, because 212120201 - 2⁶ = 212120137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212120221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106060100 + 106060101.

It is an arithmetic number, because the mean of its divisors is an integer number (106060101).

Almost surely, 2^212120201 is an apocalyptic number.

It is an amenable number.

212120201 is a deficient number, since it is larger than the sum of its proper divisors (1).

212120201 is an equidigital number, since it uses as much as digits as its factorization.

212120201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 212120201 is about 14564.3469129240. The cubic root of 212120201 is about 596.3858673041.

Adding to 212120201 its reverse (102021212), we get a palindrome (314141413).

It can be divided in two parts, 2121 and 20201, that added together give a palindrome (22322).

The spelling of 212120201 in words is "two hundred twelve million, one hundred twenty thousand, two hundred one".