211233401461 has 2 divisors, whose sum is σ = 211233401462. Its totient is φ = 211233401460.

The previous prime is 211233401419. The next prime is 211233401471. The reversal of 211233401461 is 164104332112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169686324900 + 41547076561 = 411930^2 + 203831^2 .

It is a cyclic number.

It is not a de Polignac number, because 211233401461 - 2¹¹ = 211233399413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211233401411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105616700730 + 105616700731.

It is an arithmetic number, because the mean of its divisors is an integer number (105616700731).

Almost surely, 2^211233401461 is an apocalyptic number.

It is an amenable number.

211233401461 is a deficient number, since it is larger than the sum of its proper divisors (1).

211233401461 is an equidigital number, since it uses as much as digits as its factorization.

211233401461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 211233401461 its reverse (164104332112), we get a palindrome (375337733573).

The spelling of 211233401461 in words is "two hundred eleven billion, two hundred thirty-three million, four hundred one thousand, four hundred sixty-one".