20203302121 has 8 divisors (see below), whose sum is σ = 20618362944. Its totient is φ = 19791866640.

The previous prime is 20203302109. The next prime is 20203302149. The reversal of 20203302121 is 12120330202.

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 20203302121 - 2⁹ = 20203301609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20203302095 and 20203302104.

It is not an unprimeable number, because it can be changed into a prime (20203302151) 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 7 ways as a sum of consecutive naturals, for example, 895075 + ... + 917368.

It is an arithmetic number, because the mean of its divisors is an integer number (2577295368).

Almost surely, 2^20203302121 is an apocalyptic number.

It is an amenable number.

20203302121 is a deficient number, since it is larger than the sum of its proper divisors (415060823).

20203302121 is a wasteful number, since it uses less digits than its factorization.

20203302121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812671.

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

Adding to 20203302121 its reverse (12120330202), we get a palindrome (32323632323).

The spelling of 20203302121 in words is "twenty billion, two hundred three million, three hundred two thousand, one hundred twenty-one".