212012361 has 24 divisors (see below), whose sum is σ = 334623744. Its totient is φ = 128283360.

The previous prime is 212012357. The next prime is 212012363. The reversal of 212012361 is 163210212.

It is not a de Polignac number, because 212012361 - 2² = 212012357 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212012363) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77560 + ... + 80246.

It is an arithmetic number, because the mean of its divisors is an integer number (13942656).

Almost surely, 2^212012361 is an apocalyptic number.

It is an amenable number.

212012361 is a deficient number, since it is larger than the sum of its proper divisors (122611383).

212012361 is a wasteful number, since it uses less digits than its factorization.

212012361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3501 (or 3498 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 212012361 is about 14560.6442508565. The cubic root of 212012361 is about 596.2847844375.

Adding to 212012361 its reverse (163210212), we get a palindrome (375222573).

The spelling of 212012361 in words is "two hundred twelve million, twelve thousand, three hundred sixty-one".