1166622220511 has 8 divisors (see below), whose sum is σ = 1283941431504. Its totient is φ = 1051180117120.

The previous prime is 1166622220501. The next prime is 1166622220537. The reversal of 1166622220511 is 1150222266611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1166622220511 is a prime.

It is a super-2 number, since 2×1166622220511² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166622220501) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 469275596 + ... + 469278081.

It is an arithmetic number, because the mean of its divisors is an integer number (160492678938).

Almost surely, 2^{1166622220511} is an apocalyptic number.

1166622220511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1166622220511 is a deficient number, since it is larger than the sum of its proper divisors (117319210993).

1166622220511 is a wasteful number, since it uses less digits than its factorization.

1166622220511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938553801.

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 1166622220511 in words is "one trillion, one hundred sixty-six billion, six hundred twenty-two million, two hundred twenty thousand, five hundred eleven".