20303133212121 has 16 divisors (see below), whose sum is σ = 27128429314560. Its totient is φ = 13506631856000.

The previous prime is 20303133212069. The next prime is 20303133212137. The reversal of 20303133212121 is 12121233130302.

It is a cyclic number.

It is not a de Polignac number, because 20303133212121 - 2⁹ = 20303133211609 is a prime.

It is a super-3 number, since 3×20303133212121³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20303133212091 and 20303133212100.

It is not an unprimeable number, because it can be changed into a prime (20303133212161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38006371 + ... + 38536871.

It is an arithmetic number, because the mean of its divisors is an integer number (1695526832160).

Almost surely, 2^{20303133212121} is an apocalyptic number.

It is an amenable number.

20303133212121 is a deficient number, since it is larger than the sum of its proper divisors (6825296102439).

20303133212121 is a wasteful number, since it uses less digits than its factorization.

20303133212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557616.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 20303133212121 its reverse (12121233130302), we get a palindrome (32424366342423).

The spelling of 20303133212121 in words is "twenty trillion, three hundred three billion, one hundred thirty-three million, two hundred twelve thousand, one hundred twenty-one".