211229461 has 2 divisors, whose sum is σ = 211229462. Its totient is φ = 211229460.

The previous prime is 211229453. The next prime is 211229483. The reversal of 211229461 is 164922112.

211229461 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., 125574436 + 85655025 = 11206^2 + 9255^2 .

It is a cyclic number.

It is not a de Polignac number, because 211229461 - 2³ = 211229453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211229561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105614730 + 105614731.

It is an arithmetic number, because the mean of its divisors is an integer number (105614731).

Almost surely, 2^211229461 is an apocalyptic number.

It is an amenable number.

211229461 is a deficient number, since it is larger than the sum of its proper divisors (1).

211229461 is an equidigital number, since it uses as much as digits as its factorization.

211229461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 28.

The square root of 211229461 is about 14533.7352734939. The cubic root of 211229461 is about 595.5499103615.

The spelling of 211229461 in words is "two hundred eleven million, two hundred twenty-nine thousand, four hundred sixty-one".