20120222122021 has 32 divisors (see below), whose sum is σ = 24045261004800. Its totient is φ = 16473734389440.

The previous prime is 20120222122019. The next prime is 20120222122067. The reversal of 20120222122021 is 12022122202102.

It is a cyclic number.

It is not a de Polignac number, because 20120222122021 - 2¹ = 20120222122019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20120222122021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120222120021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3290310 + ... + 7146088.

It is an arithmetic number, because the mean of its divisors is an integer number (751414406400).

Almost surely, 2^{20120222122021} is an apocalyptic number.

It is an amenable number.

20120222122021 is a deficient number, since it is larger than the sum of its proper divisors (3925038882779).

20120222122021 is a wasteful number, since it uses less digits than its factorization.

20120222122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3856129.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20120222122021 its reverse (12022122202102), we get a palindrome (32142344324123).

The spelling of 20120222122021 in words is "twenty trillion, one hundred twenty billion, two hundred twenty-two million, one hundred twenty-two thousand, twenty-one".