20212120021333 has 4 divisors (see below), whose sum is σ = 21401068257900. Its totient is φ = 19023171784768.

The previous prime is 20212120021321. The next prime is 20212120021363. The reversal of 20212120021333 is 33312002121202.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12948324230884 + 7263795790449 = 3598378^2 + 2695143^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20212120021333 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 (20212120021363) 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, 594474118258 + ... + 594474118291.

It is an arithmetic number, because the mean of its divisors is an integer number (5350267064475).

Almost surely, 2^{20212120021333} is an apocalyptic number.

It is an amenable number.

20212120021333 is a deficient number, since it is larger than the sum of its proper divisors (1188948236567).

20212120021333 is a wasteful number, since it uses less digits than its factorization.

20212120021333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188948236566.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 20212120021333 its reverse (33312002121202), we get a palindrome (53524122142535).

The spelling of 20212120021333 in words is "twenty trillion, two hundred twelve billion, one hundred twenty million, twenty-one thousand, three hundred thirty-three".