20331212033091 has 16 divisors (see below), whose sum is σ = 27263064412800. Its totient is φ = 13476769053888.

The previous prime is 20331212033039. The next prime is 20331212033101. The reversal of 20331212033091 is 19033021213302.

It is not a de Polignac number, because 20331212033091 - 2²³ = 20331203644483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20331212037091) 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, 2077615 + ... + 6706631.

It is an arithmetic number, because the mean of its divisors is an integer number (1703941525800).

Almost surely, 2^{20331212033091} is an apocalyptic number.

20331212033091 is a deficient number, since it is larger than the sum of its proper divisors (6931852379709).

20331212033091 is a wasteful number, since it uses less digits than its factorization.

20331212033091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4637378.

The product of its (nonzero) digits is 5832, while the sum is 30.

Adding to 20331212033091 its reverse (19033021213302), we get a palindrome (39364233246393).

The spelling of 20331212033091 in words is "twenty trillion, three hundred thirty-one billion, two hundred twelve million, thirty-three thousand, ninety-one".