211203207461 has 2 divisors, whose sum is σ = 211203207462. Its totient is φ = 211203207460.

The previous prime is 211203207451. The next prime is 211203207511. The reversal of 211203207461 is 164702302112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147383816836 + 63819390625 = 383906^2 + 252625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211203207461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211203207451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105601603730 + 105601603731.

It is an arithmetic number, because the mean of its divisors is an integer number (105601603731).

Almost surely, 2^211203207461 is an apocalyptic number.

It is an amenable number.

211203207461 is a deficient number, since it is larger than the sum of its proper divisors (1).

211203207461 is an equidigital number, since it uses as much as digits as its factorization.

211203207461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 211203207461 its reverse (164702302112), we get a palindrome (375905509573).

The spelling of 211203207461 in words is "two hundred eleven billion, two hundred three million, two hundred seven thousand, four hundred sixty-one".