213116212 has 12 divisors (see below), whose sum is σ = 373055620. Its totient is φ = 106528896.

The previous prime is 213116209. The next prime is 213116221. The reversal of 213116212 is 212611312.

It can be written as a sum of positive squares in 2 ways, for example, as 83064996 + 130051216 = 9114^2 + 11404^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 213116212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24508 + ... + 32044.

Almost surely, 2^213116212 is an apocalyptic number.

It is an amenable number.

213116212 is a deficient number, since it is larger than the sum of its proper divisors (159939408).

213116212 is a wasteful number, since it uses less digits than its factorization.

213116212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14610 (or 14608 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 213116212 is about 14598.5003339384. The cubic root of 213116212 is about 597.3178539460.

Adding to 213116212 its reverse (212611312), we get a palindrome (425727524).

The spelling of 213116212 in words is "two hundred thirteen million, one hundred sixteen thousand, two hundred twelve".