20331212033121 has 32 divisors (see below), whose sum is σ = 29675206519296. Its totient is φ = 12279260448000.

The previous prime is 20331212033101. The next prime is 20331212033129. The reversal of 20331212033121 is 12133021213302.

It is not a de Polignac number, because 20331212033121 - 2⁷ = 20331212032993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20331212033091 and 20331212033100.

It is not an unprimeable number, because it can be changed into a prime (20331212033129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21909786 + ... + 22818876.

It is an arithmetic number, because the mean of its divisors is an integer number (927350203728).

Almost surely, 2^{20331212033121} is an apocalyptic number.

It is an amenable number.

20331212033121 is a deficient number, since it is larger than the sum of its proper divisors (9343994486175).

20331212033121 is a wasteful number, since it uses less digits than its factorization.

20331212033121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911453.

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

Adding to 20331212033121 its reverse (12133021213302), we get a palindrome (32464233246423).

The spelling of 20331212033121 in words is "twenty trillion, three hundred thirty-one billion, two hundred twelve million, thirty-three thousand, one hundred twenty-one".