20213232120121 has 8 divisors (see below), whose sum is σ = 20403777883104. Its totient is φ = 20022716673120.

The previous prime is 20213232120073. The next prime is 20213232120149. The reversal of 20213232120121 is 12102123231202.

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 20213232120121 - 2⁹ = 20213232119609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20213232120092 and 20213232120101.

It is not an unprimeable number, because it can be changed into a prime (20217232120121) 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 7 ways as a sum of consecutive naturals, for example, 6238095 + ... + 8907316.

It is an arithmetic number, because the mean of its divisors is an integer number (2550472235388).

Almost surely, 2^{20213232120121} is an apocalyptic number.

It is an amenable number.

20213232120121 is a deficient number, since it is larger than the sum of its proper divisors (190545762983).

20213232120121 is a wasteful number, since it uses less digits than its factorization.

20213232120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15157991.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 20213232120121 its reverse (12102123231202), we get a palindrome (32315355351323).

The spelling of 20213232120121 in words is "twenty trillion, two hundred thirteen billion, two hundred thirty-two million, one hundred twenty thousand, one hundred twenty-one".