20022221002021 has 8 divisors (see below), whose sum is σ = 22891813759040. Its totient is φ = 17154947112768.

The previous prime is 20022221001917. The next prime is 20022221002057. The reversal of 20022221002021 is 12020012222002.

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 20022221002021 - 2¹⁹ = 20022220477733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20022221001986 and 20022221002004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022221008021) 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, 579698436 + ... + 579732973.

It is an arithmetic number, because the mean of its divisors is an integer number (2861476719880).

Almost surely, 2^{20022221002021} is an apocalyptic number.

It is an amenable number.

20022221002021 is a deficient number, since it is larger than the sum of its proper divisors (2869592757019).

20022221002021 is a wasteful number, since it uses less digits than its factorization.

20022221002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159433883.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20022221002021 its reverse (12020012222002), we get a palindrome (32042233224023).

The spelling of 20022221002021 in words is "twenty trillion, twenty-two billion, two hundred twenty-one million, two thousand, twenty-one".