20230032121 has 4 divisors (see below), whose sum is σ = 21786188452. Its totient is φ = 18673875792.

The previous prime is 20230032091. The next prime is 20230032149. The reversal of 20230032121 is 12123003202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12123003202 = 2 ⋅6061501601.

It can be written as a sum of positive squares in 2 ways, for example, as 4908543721 + 15321488400 = 70061^2 + 123780^2 .

It is not a de Polignac number, because 20230032121 - 2⁷ = 20230031993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20230032095 and 20230032104.

It is not an unprimeable number, because it can be changed into a prime (20230032161) 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, 778078146 + ... + 778078171.

It is an arithmetic number, because the mean of its divisors is an integer number (5446547113).

Almost surely, 2^20230032121 is an apocalyptic number.

It is an amenable number.

20230032121 is a deficient number, since it is larger than the sum of its proper divisors (1556156331).

20230032121 is a wasteful number, since it uses less digits than its factorization.

20230032121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556156330.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20230032121 its reverse (12123003202), we get a palindrome (32353035323).

The spelling of 20230032121 in words is "twenty billion, two hundred thirty million, thirty-two thousand, one hundred twenty-one".