20412113331 has 4 divisors (see below), whose sum is σ = 27216151112. Its totient is φ = 13608075552.

The previous prime is 20412113233. The next prime is 20412113441. The reversal of 20412113331 is 13331121402.

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

It is not a de Polignac number, because 20412113331 - 2¹⁹ = 20411589043 is a prime.

It is a super-2 number, since 2×20412113331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20412113298 and 20412113307.

It is not an unprimeable number, because it can be changed into a prime (20412113731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3402018886 + ... + 3402018891.

It is an arithmetic number, because the mean of its divisors is an integer number (6804037778).

Almost surely, 2^20412113331 is an apocalyptic number.

20412113331 is a deficient number, since it is larger than the sum of its proper divisors (6804037781).

20412113331 is an equidigital number, since it uses as much as digits as its factorization.

20412113331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6804037780.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20412113331 its reverse (13331121402), we get a palindrome (33743234733).

The spelling of 20412113331 in words is "twenty billion, four hundred twelve million, one hundred thirteen thousand, three hundred thirty-one".