1220101020166 has 16 divisors (see below), whose sum is σ = 2182540955904. Its totient is φ = 500165635464.

The previous prime is 1220101020163. The next prime is 1220101020167. The reversal of 1220101020166 is 6610201010221.

It is a super-2 number, since 2×1220101020166² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220101020163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1894566480 + ... + 1894567123.

It is an arithmetic number, because the mean of its divisors is an integer number (136408809744).

Almost surely, 2^{1220101020166} is an apocalyptic number.

1220101020166 is a deficient number, since it is larger than the sum of its proper divisors (962439935738).

1220101020166 is a wasteful number, since it uses less digits than its factorization.

1220101020166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3789133635.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 1220101020166 its reverse (6610201010221), we get a palindrome (7830302030387).

The spelling of 1220101020166 in words is "one trillion, two hundred twenty billion, one hundred one million, twenty thousand, one hundred sixty-six".