20242131211 has 4 divisors (see below), whose sum is σ = 20498360800. Its totient is φ = 19985901624.

The previous prime is 20242131209. The next prime is 20242131229. The reversal of 20242131211 is 11213124202.

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 20242131211 - 2¹ = 20242131209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20242131281) 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, 128114676 + ... + 128114833.

It is an arithmetic number, because the mean of its divisors is an integer number (5124590200).

Almost surely, 2^20242131211 is an apocalyptic number.

20242131211 is a deficient number, since it is larger than the sum of its proper divisors (256229589).

20242131211 is an equidigital number, since it uses as much as digits as its factorization.

20242131211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256229588.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20242131211 its reverse (11213124202), we get a palindrome (31455255413).

The spelling of 20242131211 in words is "twenty billion, two hundred forty-two million, one hundred thirty-one thousand, two hundred eleven".