22220110012021 has 8 divisors (see below), whose sum is σ = 22449634292120. Its totient is φ = 21990594935808.

The previous prime is 22220110012003. The next prime is 22220110012027. The reversal of 22220110012021 is 12021001102222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1334981511396 + 20885128500625 = 1155414^2 + 4570025^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22220110012021 - 2¹⁹ = 22220109487733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22220110011986 and 22220110012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220110012027) 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 7 ways as a sum of consecutive naturals, for example, 2606155 + ... + 7157671.

It is an arithmetic number, because the mean of its divisors is an integer number (2806204286515).

Almost surely, 2^{22220110012021} is an apocalyptic number.

It is an amenable number.

22220110012021 is a deficient number, since it is larger than the sum of its proper divisors (229524280099).

22220110012021 is an equidigital number, since it uses as much as digits as its factorization.

22220110012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4601943.

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

Adding to 22220110012021 its reverse (12021001102222), we get a palindrome (34241111114243).

The spelling of 22220110012021 in words is "twenty-two trillion, two hundred twenty billion, one hundred ten million, twelve thousand, twenty-one".