20122220220101 has 4 divisors (see below), whose sum is σ = 20167642839552. Its totient is φ = 20076797600652.

The previous prime is 20122220220073. The next prime is 20122220220119. The reversal of 20122220220101 is 10102202222102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20122220220101 - 2³⁴ = 20105040350917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20122220220101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122220220181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22711309061 + ... + 22711309946.

It is an arithmetic number, because the mean of its divisors is an integer number (5041910709888).

Almost surely, 2^{20122220220101} is an apocalyptic number.

It is an amenable number.

20122220220101 is a deficient number, since it is larger than the sum of its proper divisors (45422619451).

20122220220101 is an equidigital number, since it uses as much as digits as its factorization.

20122220220101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45422619450.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20122220220101 its reverse (10102202222102), we get a palindrome (30224422442203).

The spelling of 20122220220101 in words is "twenty trillion, one hundred twenty-two billion, two hundred twenty million, two hundred twenty thousand, one hundred one".