20331332121 has 8 divisors (see below), whose sum is σ = 28703057184. Its totient is φ = 12756914240.

The previous prime is 20331332089. The next prime is 20331332143. The reversal of 20331332121 is 12123313302.

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

It is not a de Polignac number, because 20331332121 - 2⁵ = 20331332089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20331332821) 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, 199326735 + ... + 199326836.

It is an arithmetic number, because the mean of its divisors is an integer number (3587882148).

Almost surely, 2^20331332121 is an apocalyptic number.

It is an amenable number.

20331332121 is a deficient number, since it is larger than the sum of its proper divisors (8371725063).

20331332121 is a wasteful number, since it uses less digits than its factorization.

20331332121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398653591.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 20331332121 its reverse (12123313302), we get a palindrome (32454645423).

The spelling of 20331332121 in words is "twenty billion, three hundred thirty-one million, three hundred thirty-two thousand, one hundred twenty-one".