22022101551666 has 32 divisors (see below), whose sum is σ = 44187318881280. Its totient is φ = 7316852265216.

The previous prime is 22022101551629. The next prime is 22022101551679. The reversal of 22022101551666 is 66615510122022.

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 15 ways as a sum of consecutive naturals, for example, 19784970 + ... + 20868378.

It is an arithmetic number, because the mean of its divisors is an integer number (1380853715040).

Almost surely, 2^{22022101551666} is an apocalyptic number.

22022101551666 is an abundant number, since it is smaller than the sum of its proper divisors (22165217329614).

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

22022101551666 is a wasteful number, since it uses less digits than its factorization.

22022101551666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094418.

The product of its (nonzero) digits is 86400, while the sum is 39.

Adding to 22022101551666 its reverse (66615510122022), we get a palindrome (88637611673688).

The spelling of 22022101551666 in words is "twenty-two trillion, twenty-two billion, one hundred one million, five hundred fifty-one thousand, six hundred sixty-six".