612212252 has 12 divisors (see below), whose sum is σ = 1117952976. Its totient is φ = 292797120.

The previous prime is 612212231. The next prime is 612212257. The reversal of 612212252 is 252212216.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612212257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3327149 + ... + 3327332.

It is an arithmetic number, because the mean of its divisors is an integer number (93162748).

Almost surely, 2^612212252 is an apocalyptic number.

It is an amenable number.

612212252 is a deficient number, since it is larger than the sum of its proper divisors (505740724).

612212252 is a wasteful number, since it uses less digits than its factorization.

612212252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6654508 (or 6654506 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 612212252 is about 24742.9232711093. The cubic root of 612212252 is about 849.1166148778.

Adding to 612212252 its reverse (252212216), we get a palindrome (864424468).

The spelling of 612212252 in words is "six hundred twelve million, two hundred twelve thousand, two hundred fifty-two".