211012541 has 2 divisors, whose sum is σ = 211012542. Its totient is φ = 211012540.

The previous prime is 211012531. The next prime is 211012579. The reversal of 211012541 is 145210112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208686916 + 2325625 = 14446^2 + 1525^2 .

It is a cyclic number.

It is not a de Polignac number, because 211012541 - 2¹⁰ = 211011517 is a prime.

It is a super-3 number, since 3×211012541³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211012531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105506270 + 105506271.

It is an arithmetic number, because the mean of its divisors is an integer number (105506271).

Almost surely, 2^211012541 is an apocalyptic number.

It is an amenable number.

211012541 is a deficient number, since it is larger than the sum of its proper divisors (1).

211012541 is an equidigital number, since it uses as much as digits as its factorization.

211012541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 211012541 is about 14526.2707189423. The cubic root of 211012541 is about 595.3459758448.

Adding to 211012541 its reverse (145210112), we get a palindrome (356222653).

The spelling of 211012541 in words is "two hundred eleven million, twelve thousand, five hundred forty-one".