20021321301121 has 16 divisors (see below), whose sum is σ = 22928076160000. Its totient is φ = 17126210107728.

The previous prime is 20021321301043. The next prime is 20021321301133. The reversal of 20021321301121 is 12110312312002.

It is a cyclic number.

It is not a de Polignac number, because 20021321301121 - 2⁷ = 20021321300993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20021321341121) 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 15 ways as a sum of consecutive naturals, for example, 147626740 + ... + 147762298.

It is an arithmetic number, because the mean of its divisors is an integer number (1433004760000).

Almost surely, 2^{20021321301121} is an apocalyptic number.

It is an amenable number.

20021321301121 is a deficient number, since it is larger than the sum of its proper divisors (2906754858879).

20021321301121 is a wasteful number, since it uses less digits than its factorization.

20021321301121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178348.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 20021321301121 its reverse (12110312312002), we get a palindrome (32131633613123).

The spelling of 20021321301121 in words is "twenty trillion, twenty-one billion, three hundred twenty-one million, three hundred one thousand, one hundred twenty-one".