20220011012221 has 4 divisors (see below), whose sum is σ = 20220044720092. Its totient is φ = 20219977304352.

The previous prime is 20220011012197. The next prime is 20220011012239. The reversal of 20220011012221 is 12221011002202.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 334877486596 + 19885133525625 = 578686^2 + 4459275^2 .

It is a cyclic number.

It is not a de Polignac number, because 20220011012221 - 2⁷ = 20220011012093 is a prime.

It is a super-2 number, since 2×20220011012221² (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 = 20220011012195 and 20220011012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220011012291) 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, 15937536 + ... + 17159401.

It is an arithmetic number, because the mean of its divisors is an integer number (5055011180023).

Almost surely, 2^{20220011012221} is an apocalyptic number.

It is an amenable number.

20220011012221 is a deficient number, since it is larger than the sum of its proper divisors (33707871).

20220011012221 is an equidigital number, since it uses as much as digits as its factorization.

20220011012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33707870.

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

Adding to 20220011012221 its reverse (12221011002202), we get a palindrome (32441022014423).

The spelling of 20220011012221 in words is "twenty trillion, two hundred twenty billion, eleven million, twelve thousand, two hundred twenty-one".