212116465 has 32 divisors (see below), whose sum is σ = 293849856. Its totient is φ = 145474560.

The previous prime is 212116451. The next prime is 212116519. The reversal of 212116465 is 564611212.

212116465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212116465 - 2⁵ = 212116433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91197 + ... + 93493.

It is an arithmetic number, because the mean of its divisors is an integer number (9182808).

Almost surely, 2^212116465 is an apocalyptic number.

It is an amenable number.

212116465 is a deficient number, since it is larger than the sum of its proper divisors (81733391).

212116465 is a wasteful number, since it uses less digits than its factorization.

212116465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409.

The product of its digits is 2880, while the sum is 28.

The square root of 212116465 is about 14564.2186539478. The cubic root of 212116465 is about 596.3823659706.

Adding to 212116465 its reverse (564611212), we get a palindrome (776727677).

The spelling of 212116465 in words is "two hundred twelve million, one hundred sixteen thousand, four hundred sixty-five".