20212033331 has 4 divisors (see below), whose sum is σ = 23099466672. Its totient is φ = 17324599992.

The previous prime is 20212033321. The next prime is 20212033333. The reversal of 20212033331 is 13333021202.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20212033331 - 2²⁶ = 20144924467 is a prime.

It is a super-2 number, since 2×20212033331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20212033333) 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 3 ways as a sum of consecutive naturals, for example, 1443716660 + ... + 1443716673.

It is an arithmetic number, because the mean of its divisors is an integer number (5774866668).

Almost surely, 2^20212033331 is an apocalyptic number.

20212033331 is a deficient number, since it is larger than the sum of its proper divisors (2887433341).

20212033331 is an equidigital number, since it uses as much as digits as its factorization.

20212033331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887433340.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20212033331 its reverse (13333021202), we get a palindrome (33545054533).

The spelling of 20212033331 in words is "twenty billion, two hundred twelve million, thirty-three thousand, three hundred thirty-one".