166153221222122 has 16 divisors (see below), whose sum is σ = 260073064068480. Its totient is φ = 79462398549072.

The previous prime is 166153221222101. The next prime is 166153221222127. The reversal of 166153221222122 is 221222122351661.

It is not an unprimeable number, because it can be changed into a prime (166153221222127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47979422 + ... + 51325737.

It is an arithmetic number, because the mean of its divisors is an integer number (16254566504280).

Almost surely, 2^{166153221222122} is an apocalyptic number.

166153221222122 is a deficient number, since it is larger than the sum of its proper divisors (93919842846358).

166153221222122 is a wasteful number, since it uses less digits than its factorization.

166153221222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99341557.

The product of its digits is 69120, while the sum is 38.

Adding to 166153221222122 its reverse (221222122351661), we get a palindrome (387375343573783).

The spelling of 166153221222122 in words is "one hundred sixty-six trillion, one hundred fifty-three billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty-two".