20101222220122 has 16 divisors (see below), whose sum is σ = 30202637977512. Its totient is φ = 10033688367360.

The previous prime is 20101222220119. The next prime is 20101222220129. The reversal of 20101222220122 is 22102222210102.

It can be written as a sum of positive squares in 4 ways, for example, as 19586457584281 + 514764635841 = 4425659^2 + 717471^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20101222220122.

It is not an unprimeable number, because it can be changed into a prime (20101222220129) 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, 279622 + ... + 6346702.

Almost surely, 2^{20101222220122} is an apocalyptic number.

20101222220122 is a deficient number, since it is larger than the sum of its proper divisors (10101415757390).

20101222220122 is a wasteful number, since it uses less digits than its factorization.

20101222220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6069873.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20101222220122 its reverse (22102222210102), we get a palindrome (42203444430224).

The spelling of 20101222220122 in words is "twenty trillion, one hundred one billion, two hundred twenty-two million, two hundred twenty thousand, one hundred twenty-two".