212407111 has 6 divisors (see below), whose sum is σ = 247085880. Its totient is φ = 182063196.

The previous prime is 212407109. The next prime is 212407123. The reversal of 212407111 is 111704212.

It is not a de Polignac number, because 212407111 - 2¹ = 212407109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212407171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2167371 + ... + 2167468.

It is an arithmetic number, because the mean of its divisors is an integer number (41180980).

Almost surely, 2^212407111 is an apocalyptic number.

212407111 is a deficient number, since it is larger than the sum of its proper divisors (34678769).

212407111 is an equidigital number, since it uses as much as digits as its factorization.

212407111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4334853 (or 4334846 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 212407111 is about 14574.1933224450. The cubic root of 212407111 is about 596.6546331264.

The spelling of 212407111 in words is "two hundred twelve million, four hundred seven thousand, one hundred eleven".