20124330211 has 4 divisors (see below), whose sum is σ = 20282789632. Its totient is φ = 19965870792.

The previous prime is 20124330173. The next prime is 20124330223. The reversal of 20124330211 is 11203342102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20124330211 - 2¹³ = 20124322019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20124330911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79229520 + ... + 79229773.

It is an arithmetic number, because the mean of its divisors is an integer number (5070697408).

Almost surely, 2^20124330211 is an apocalyptic number.

20124330211 is a deficient number, since it is larger than the sum of its proper divisors (158459421).

20124330211 is a wasteful number, since it uses less digits than its factorization.

20124330211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158459420.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20124330211 its reverse (11203342102), we get a palindrome (31327672313).

The spelling of 20124330211 in words is "twenty billion, one hundred twenty-four million, three hundred thirty thousand, two hundred eleven".