212106465 has 32 divisors (see below), whose sum is σ = 382406400. Its totient is φ = 111525120.

The previous prime is 212106463. The next prime is 212106473. The reversal of 212106465 is 564601212.

212106465 is a `hidden beast` number, since 2 + 1 + 2 + 10 + 646 + 5 = 666.

212106465 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 212106465 - 2¹ = 212106463 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (212106463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1480 + ... + 20649.

It is an arithmetic number, because the mean of its divisors is an integer number (11950200).

Almost surely, 2^212106465 is an apocalyptic number.

It is an amenable number.

212106465 is a deficient number, since it is larger than the sum of its proper divisors (170299935).

212106465 is a wasteful number, since it uses less digits than its factorization.

212106465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22214 (or 22208 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 212106465 is about 14563.8753427788. The cubic root of 212106465 is about 596.3729938907.

Adding to 212106465 its reverse (564601212), we get a palindrome (776707677).

The spelling of 212106465 in words is "two hundred twelve million, one hundred six thousand, four hundred sixty-five".