212012539 has 2 divisors, whose sum is σ = 212012540. Its totient is φ = 212012538.

The previous prime is 212012527. The next prime is 212012573. The reversal of 212012539 is 935210212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212012539 - 2¹³ = 212004347 is a prime.

It is not a weakly prime, because it can be changed into another prime (212012519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006269 + 106006270.

It is an arithmetic number, because the mean of its divisors is an integer number (106006270).

Almost surely, 2^212012539 is an apocalyptic number.

212012539 is a deficient number, since it is larger than the sum of its proper divisors (1).

212012539 is an equidigital number, since it uses as much as digits as its factorization.

212012539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 212012539 is about 14560.6503632221. The cubic root of 212012539 is about 596.2849513124.

The spelling of 212012539 in words is "two hundred twelve million, twelve thousand, five hundred thirty-nine".