20332021312121 has 4 divisors (see below), whose sum is σ = 20332030335744. Its totient is φ = 20332012288500.

The previous prime is 20332021312091. The next prime is 20332021312147. The reversal of 20332021312121 is 12121312023302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20332021312121 - 2¹⁴ = 20332021295737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20332021315121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2021516 + ... + 6689586.

It is an arithmetic number, because the mean of its divisors is an integer number (5083007583936).

Almost surely, 2^{20332021312121} is an apocalyptic number.

It is an amenable number.

20332021312121 is a deficient number, since it is larger than the sum of its proper divisors (9023623).

20332021312121 is an equidigital number, since it uses as much as digits as its factorization.

20332021312121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9023622.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 20332021312121 its reverse (12121312023302), we get a palindrome (32453333335423).

The spelling of 20332021312121 in words is "twenty trillion, three hundred thirty-two billion, twenty-one million, three hundred twelve thousand, one hundred twenty-one".