20331212033021 has 8 divisors (see below), whose sum is σ = 20959039109760. Its totient is φ = 19712825965152.

The previous prime is 20331212032993. The next prime is 20331212033023. The reversal of 20331212033021 is 12033021213302.

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 20331212033021 - 2¹⁴ = 20331212016637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331212033023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2360247845 + ... + 2360256458.

It is an arithmetic number, because the mean of its divisors is an integer number (2619879888720).

Almost surely, 2^{20331212033021} is an apocalyptic number.

It is an amenable number.

20331212033021 is a deficient number, since it is larger than the sum of its proper divisors (627827076739).

20331212033021 is an equidigital number, since it uses as much as digits as its factorization.

20331212033021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4720504435.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 20331212033021 its reverse (12033021213302), we get a palindrome (32364233246323).

The spelling of 20331212033021 in words is "twenty trillion, three hundred thirty-one billion, two hundred twelve million, thirty-three thousand, twenty-one".