20020121022021 has 8 divisors (see below), whose sum is σ = 27145926809760. Its totient is φ = 13120531291152.

The previous prime is 20020121022017. The next prime is 20020121022049. The reversal of 20020121022021 is 12022012102002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20020121022021 - 2² = 20020121022017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020121022001) 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, 56554014010 + ... + 56554014363.

It is an arithmetic number, because the mean of its divisors is an integer number (3393240851220).

Almost surely, 2^{20020121022021} is an apocalyptic number.

It is an amenable number.

20020121022021 is a deficient number, since it is larger than the sum of its proper divisors (7125805787739).

20020121022021 is a wasteful number, since it uses less digits than its factorization.

20020121022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113108028435.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20020121022021 its reverse (12022012102002), we get a palindrome (32042133124023).

The spelling of 20020121022021 in words is "twenty trillion, twenty billion, one hundred twenty-one million, twenty-two thousand, twenty-one".