20220021201121 has 4 divisors (see below), whose sum is σ = 23108595658432. Its totient is φ = 17331446743812.

The previous prime is 20220021201109. The next prime is 20220021201221. The reversal of 20220021201121 is 12110212002202.

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 20220021201121 - 2¹⁷ = 20220021070049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20220021201095 and 20220021201104.

It is not an unprimeable number, because it can be changed into a prime (20220021201221) 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, 1444287228645 + ... + 1444287228658.

It is an arithmetic number, because the mean of its divisors is an integer number (5777148914608).

Almost surely, 2^{20220021201121} is an apocalyptic number.

It is an amenable number.

20220021201121 is a deficient number, since it is larger than the sum of its proper divisors (2888574457311).

20220021201121 is an equidigital number, since it uses as much as digits as its factorization.

20220021201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2888574457310.

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

Adding to 20220021201121 its reverse (12110212002202), we get a palindrome (32330233203323).

The spelling of 20220021201121 in words is "twenty trillion, two hundred twenty billion, twenty-one million, two hundred one thousand, one hundred twenty-one".