20122120201021 has 8 divisors (see below), whose sum is σ = 20560794508800. Its totient is φ = 19683885230448.

The previous prime is 20122120200997. The next prime is 20122120201033. The reversal of 20122120201021 is 12010202122102.

It is a happy number.

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 20122120201021 - 2⁷ = 20122120200893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20122120200986 and 20122120201004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122120201061) 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, 109741701 + ... + 109924906.

It is an arithmetic number, because the mean of its divisors is an integer number (2570099313600).

Almost surely, 2^{20122120201021} is an apocalyptic number.

It is an amenable number.

20122120201021 is a deficient number, since it is larger than the sum of its proper divisors (438674307779).

20122120201021 is a wasteful number, since it uses less digits than its factorization.

20122120201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219668603.

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

Adding to 20122120201021 its reverse (12010202122102), we get a palindrome (32132322323123).

The spelling of 20122120201021 in words is "twenty trillion, one hundred twenty-two billion, one hundred twenty million, two hundred one thousand, twenty-one".