612213212 has 48 divisors (see below), whose sum is σ = 1219441440. Its totient is φ = 266602752.

The previous prime is 612213169. The next prime is 612213223. The reversal of 612213212 is 212312216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272558 + ... + 274794.

It is an arithmetic number, because the mean of its divisors is an integer number (25405030).

Almost surely, 2^612213212 is an apocalyptic number.

It is an amenable number.

612213212 is a deficient number, since it is larger than the sum of its proper divisors (607228228).

612213212 is a wasteful number, since it uses less digits than its factorization.

612213212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550 (or 2548 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 612213212 is about 24742.9426705879. The cubic root of 612213212 is about 849.1170587062.

Adding to 612213212 its reverse (212312216), we get a palindrome (824525428).

The spelling of 612213212 in words is "six hundred twelve million, two hundred thirteen thousand, two hundred twelve".