20012120333 has 4 divisors (see below), whose sum is σ = 21189303900. Its totient is φ = 18834936768.

The previous prime is 20012120269. The next prime is 20012120351. The reversal of 20012120333 is 33302121002.

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 17063413129 + 2948707204 = 130627^2 + 54302^2 .

It is a cyclic number.

It is not a de Polignac number, because 20012120333 - 2⁶ = 20012120269 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 1177183549 = 20012120333 / (2 + 0 + 0 + 1 + 2 + 1 + 2 + 0 + 3 + 3 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012120353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 588591758 + ... + 588591791.

It is an arithmetic number, because the mean of its divisors is an integer number (5297325975).

Almost surely, 2^20012120333 is an apocalyptic number.

It is an amenable number.

20012120333 is a deficient number, since it is larger than the sum of its proper divisors (1177183567).

20012120333 is a wasteful number, since it uses less digits than its factorization.

20012120333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177183566.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20012120333 its reverse (33302121002), we get a palindrome (53314241335).

The spelling of 20012120333 in words is "twenty billion, twelve million, one hundred twenty thousand, three hundred thirty-three".