212249507 has 2 divisors, whose sum is σ = 212249508. Its totient is φ = 212249506.

The previous prime is 212249503. The next prime is 212249563. The reversal of 212249507 is 705942212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212249507 - 2² = 212249503 is a prime.

It is equal to p_11718842 and since 212249507 and 11718842 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (212249503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106124753 + 106124754.

It is an arithmetic number, because the mean of its divisors is an integer number (106124754).

Almost surely, 2^212249507 is an apocalyptic number.

212249507 is a deficient number, since it is larger than the sum of its proper divisors (1).

212249507 is an equidigital number, since it uses as much as digits as its factorization.

212249507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 212249507 is about 14568.7853646074. The cubic root of 212249507 is about 596.5070259776.

The spelling of 212249507 in words is "two hundred twelve million, two hundred forty-nine thousand, five hundred seven".