2421131111 has 6 divisors (see below), whose sum is σ = 2816417880. Its totient is φ = 2075255196.

The previous prime is 2421131101. The next prime is 2421131117. The reversal of 2421131111 is 1111311242.

2421131111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2421131111 - 2¹⁰ = 2421130087 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2421131111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421131117) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24705371 + ... + 24705468.

It is an arithmetic number, because the mean of its divisors is an integer number (469402980).

Almost surely, 2^2421131111 is an apocalyptic number.

2421131111 is a deficient number, since it is larger than the sum of its proper divisors (395286769).

2421131111 is an equidigital number, since it uses as much as digits as its factorization.

2421131111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49410853 (or 49410846 counting only the distinct ones).

The product of its digits is 48, while the sum is 17.

The square root of 2421131111 is about 49204.9907123251. The cubic root of 2421131111 is about 1342.7838300277.

Adding to 2421131111 its reverse (1111311242), we get a palindrome (3532442353).

It can be divided in two parts, 2421131 and 111, that added together give a palindrome (2421242).

The spelling of 2421131111 in words is "two billion, four hundred twenty-one million, one hundred thirty-one thousand, one hundred eleven".