212260591 has 2 divisors, whose sum is σ = 212260592. Its totient is φ = 212260590.

The previous prime is 212260553. The next prime is 212260603. The reversal of 212260591 is 195062212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212260591 - 2¹⁵ = 212227823 is a prime.

It is a Chen prime.

It is equal to p_11719405 and since 212260591 and 11719405 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212260091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106130295 + 106130296.

It is an arithmetic number, because the mean of its divisors is an integer number (106130296).

Almost surely, 2^212260591 is an apocalyptic number.

212260591 is a deficient number, since it is larger than the sum of its proper divisors (1).

212260591 is an equidigital number, since it uses as much as digits as its factorization.

212260591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 212260591 is about 14569.1657619783. The cubic root of 212260591 is about 596.5174093056.

The spelling of 212260591 in words is "two hundred twelve million, two hundred sixty thousand, five hundred ninety-one".