1226215163716 has 27 divisors (see below), whose sum is σ = 2279599739319. Its totient is φ = 577024712448.

The previous prime is 1226215163671. The next prime is 1226215163717. The reversal of 1226215163716 is 6173615126221.

The square root of 1226215163716 is 1107346.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 795753202500 + 430461961216 = 892050^2 + 656096^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226215163717) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 37633480 + ... + 37666048.

Almost surely, 2^{1226215163716} is an apocalyptic number.

1226215163716 is the 1107346-th square number.

It is an amenable number.

1226215163716 is a deficient number, since it is larger than the sum of its proper divisors (1053384575603).

1226215163716 is an frugal number, since it uses more digits than its factorization.

1226215163716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65176 (or 32588 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The spelling of 1226215163716 in words is "one trillion, two hundred twenty-six billion, two hundred fifteen million, one hundred sixty-three thousand, seven hundred sixteen".