22220001166611 has 64 divisors (see below), whose sum is σ = 31462748798976. Its totient is φ = 13926499171200.

The previous prime is 22220001166523. The next prime is 22220001166661. The reversal of 22220001166611 is 11666110002222.

22220001166611 is a nontrivial binomial coefficient, being equal to C(6666334, 2).

It is not a de Polignac number, because 22220001166611 - 2¹⁰ = 22220001165587 is a prime.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22220001166661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1406588365 + ... + 1406604161.

It is an arithmetic number, because the mean of its divisors is an integer number (491605449984).

Almost surely, 2^{22220001166611} is an apocalyptic number.

22220001166611 is the 6666333-rd triangular number and also the 3333167-th hexagonal number.

22220001166611 is a deficient number, since it is larger than the sum of its proper divisors (9242747632365).

22220001166611 is a wasteful number, since it uses less digits than its factorization.

22220001166611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17752.

The product of its (nonzero) digits is 3456, while the sum is 30.

Adding to 22220001166611 its reverse (11666110002222), we get a palindrome (33886111168833).

The spelling of 22220001166611 in words is "twenty-two trillion, two hundred twenty billion, one million, one hundred sixty-six thousand, six hundred eleven".