1217022756066 has 24 divisors (see below), whose sum is σ = 2839719764700. Its totient is φ = 374468540256.

The previous prime is 1217022756041. The next prime is 1217022756091. The reversal of 1217022756066 is 6606572207121.

1217022756066 is a `hidden beast` number, since 1 + 2 + 1 + 7 + 0 + 2 + 27 + 560 + 66 = 666.

It is an interprime number because it is at equal distance from previous prime (1217022756041) and next prime (1217022756091).

It can be written as a sum of positive squares in 2 ways, for example, as 1175535176841 + 41487579225 = 1084221^2 + 203685^2 .

It is a super-2 number, since 2×1217022756066² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2600475741 + ... + 2600476208.

Almost surely, 2^{1217022756066} is an apocalyptic number.

1217022756066 is an abundant number, since it is smaller than the sum of its proper divisors (1622697008634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1217022756066 is a wasteful number, since it uses less digits than its factorization.

1217022756066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5200951970 (or 5200951967 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 1217022756066 in words is "one trillion, two hundred seventeen billion, twenty-two million, seven hundred fifty-six thousand, sixty-six".