20020022201221 has 8 divisors (see below), whose sum is σ = 22912296218240. Its totient is φ = 17135815895568.

The previous prime is 20020022201203. The next prime is 20020022201239. The reversal of 20020022201221 is 12210222002002.

It is an interprime number because it is at equal distance from previous prime (20020022201203) and next prime (20020022201239).

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 20020022201221 - 2⁷ = 20020022201093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20020022201195 and 20020022201204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020022201021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2016922521 + ... + 2016932446.

It is an arithmetic number, because the mean of its divisors is an integer number (2864037027280).

Almost surely, 2^{20020022201221} is an apocalyptic number.

It is an amenable number.

20020022201221 is a deficient number, since it is larger than the sum of its proper divisors (2892274017019).

20020022201221 is an equidigital number, since it uses as much as digits as its factorization.

20020022201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4033855683.

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

Adding to 20020022201221 its reverse (12210222002002), we get a palindrome (32230244203223).

The spelling of 20020022201221 in words is "twenty trillion, twenty billion, twenty-two million, two hundred one thousand, two hundred twenty-one".