20122020110221 has 4 divisors (see below), whose sum is σ = 20122313900832. Its totient is φ = 20121726319612.

The previous prime is 20122020110189. The next prime is 20122020110233. The reversal of 20122020110221 is 12201102022102.

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 20122020110221 - 2⁵ = 20122020110189 is a prime.

It is a super-2 number, since 2×20122020110221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20122020110195 and 20122020110204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122020110261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146792545 + ... + 146929558.

It is an arithmetic number, because the mean of its divisors is an integer number (5030578475208).

Almost surely, 2^{20122020110221} is an apocalyptic number.

It is an amenable number.

20122020110221 is a deficient number, since it is larger than the sum of its proper divisors (293790611).

20122020110221 is an equidigital number, since it uses as much as digits as its factorization.

20122020110221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293790610.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20122020110221 its reverse (12201102022102), we get a palindrome (32323122132323).

The spelling of 20122020110221 in words is "twenty trillion, one hundred twenty-two billion, twenty million, one hundred ten thousand, two hundred twenty-one".