20330123121 has 64 divisors (see below), whose sum is σ = 37574645760. Its totient is φ = 10554338880.

The previous prime is 20330123059. The next prime is 20330123147. The reversal of 20330123121 is 12132103302.

20330123121 is a `hidden beast` number, since 20 + 330 + 1 + 2 + 312 + 1 = 666.

It is not a de Polignac number, because 20330123121 - 2⁶ = 20330123057 is a prime.

It is a super-2 number, since 2×20330123121² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20330123094 and 20330123103.

It is not an unprimeable number, because it can be changed into a prime (20330123161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6145950 + ... + 6149256.

It is an arithmetic number, because the mean of its divisors is an integer number (587103840).

Almost surely, 2^20330123121 is an apocalyptic number.

20330123121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20330123121 is a deficient number, since it is larger than the sum of its proper divisors (17244522639).

20330123121 is a wasteful number, since it uses less digits than its factorization.

20330123121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6291 (or 6285 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20330123121 its reverse (12132103302), we get a palindrome (32462226423).

The spelling of 20330123121 in words is "twenty billion, three hundred thirty million, one hundred twenty-three thousand, one hundred twenty-one".