20124204122311 has 4 divisors (see below), whose sum is σ = 20125294233624. Its totient is φ = 20123114011000.

The previous prime is 20124204122221. The next prime is 20124204122353. The reversal of 20124204122311 is 11322140242102.

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 20124204122311 - 2³⁹ = 19574448308423 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 (20124204122611) 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, 545027965 + ... + 545064886.

It is an arithmetic number, because the mean of its divisors is an integer number (5031323558406).

Almost surely, 2^{20124204122311} is an apocalyptic number.

20124204122311 is a deficient number, since it is larger than the sum of its proper divisors (1090111313).

20124204122311 is a wasteful number, since it uses less digits than its factorization.

20124204122311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090111312.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 20124204122311 its reverse (11322140242102), we get a palindrome (31446344364413).

The spelling of 20124204122311 in words is "twenty trillion, one hundred twenty-four billion, two hundred four million, one hundred twenty-two thousand, three hundred eleven".