20102222022122 has 4 divisors (see below), whose sum is σ = 30153333033186. Its totient is φ = 10051111011060.

The previous prime is 20102222022121. The next prime is 20102222022139. The reversal of 20102222022122 is 22122022220102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11418715547281 + 8683506474841 = 3379159^2 + 2946779^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20102222022094 and 20102222022103.

It is not an unprimeable number, because it can be changed into a prime (20102222022121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5025555505529 + ... + 5025555505532.

Almost surely, 2^{20102222022122} is an apocalyptic number.

20102222022122 is a deficient number, since it is larger than the sum of its proper divisors (10051111011064).

20102222022122 is a wasteful number, since it uses less digits than its factorization.

20102222022122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10051111011063.

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

Adding to 20102222022122 its reverse (22122022220102), we get a palindrome (42224244242224).

The spelling of 20102222022122 in words is "twenty trillion, one hundred two billion, two hundred twenty-two million, twenty-two thousand, one hundred twenty-two".