212021141 has 2 divisors, whose sum is σ = 212021142. Its totient is φ = 212021140.

The previous prime is 212021113. The next prime is 212021143. The reversal of 212021141 is 141120212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167598916 + 44422225 = 12946^2 + 6665^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212021141 is a prime.

Together with 212021143, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212021143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010570 + 106010571.

It is an arithmetic number, because the mean of its divisors is an integer number (106010571).

Almost surely, 2^212021141 is an apocalyptic number.

It is an amenable number.

212021141 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021141 is an equidigital number, since it uses as much as digits as its factorization.

212021141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 212021141 is about 14560.9457453834. The cubic root of 212021141 is about 596.2930155741.

Adding to 212021141 its reverse (141120212), we get a palindrome (353141353).

The spelling of 212021141 in words is "two hundred twelve million, twenty-one thousand, one hundred forty-one".