212240101 has 2 divisors, whose sum is σ = 212240102. Its totient is φ = 212240100.

The previous prime is 212240099. The next prime is 212240141. The reversal of 212240101 is 101042212.

It is a happy number.

212240101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184688100 + 27552001 = 13590^2 + 5249^2 .

It is a cyclic number.

It is not a de Polignac number, because 212240101 - 2¹ = 212240099 is a prime.

Together with 212240099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212240141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106120050 + 106120051.

It is an arithmetic number, because the mean of its divisors is an integer number (106120051).

Almost surely, 2^212240101 is an apocalyptic number.

It is an amenable number.

212240101 is a deficient number, since it is larger than the sum of its proper divisors (1).

212240101 is an equidigital number, since it uses as much as digits as its factorization.

212240101 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 13.

The square root of 212240101 is about 14568.4625475717. The cubic root of 212240101 is about 596.4982142917.

Adding to 212240101 its reverse (101042212), we get a palindrome (313282313).

The spelling of 212240101 in words is "two hundred twelve million, two hundred forty thousand, one hundred one".