126211216 has 20 divisors (see below), whose sum is σ = 246958524. Its totient is φ = 62480000.

The previous prime is 126211193. The next prime is 126211223. The reversal of 126211216 is 612112621.

It can be written as a sum of positive squares in 2 ways, for example, as 115347600 + 10863616 = 10740^2 + 3296^2 .

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, 37435 + ... + 40666.

Almost surely, 2^126211216 is an apocalyptic number.

126211216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

126211216 is a deficient number, since it is larger than the sum of its proper divisors (120747308).

126211216 is a wasteful number, since it uses less digits than its factorization.

126211216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78210 (or 78204 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

The square root of 126211216 is about 11234.3765292071. The cubic root of 126211216 is about 501.6097664089.

Adding to 126211216 its reverse (612112621), we get a palindrome (738323837).

The spelling of 126211216 in words is "one hundred twenty-six million, two hundred eleven thousand, two hundred sixteen".