20101222220222 has 64 divisors (see below), whose sum is σ = 35681216014080. Its totient is φ = 8372641939200.

The previous prime is 20101222220221. The next prime is 20101222220227. The reversal of 20101222220222 is 22202222210102.

It is a junction number, because it is equal to n+sod(n) for n = 20101222220194 and 20101222220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101222220221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 728001197 + ... + 728028807.

It is an arithmetic number, because the mean of its divisors is an integer number (557519000220).

Almost surely, 2^{20101222220222} is an apocalyptic number.

20101222220222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20101222220222 is a deficient number, since it is larger than the sum of its proper divisors (15579993793858).

20101222220222 is a wasteful number, since it uses less digits than its factorization.

20101222220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46089.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20101222220222 its reverse (22202222210102), we get a palindrome (42303444430324).

The spelling of 20101222220222 in words is "twenty trillion, one hundred one billion, two hundred twenty-two million, two hundred twenty thousand, two hundred twenty-two".