2421321123 has 16 divisors (see below), whose sum is σ = 3588924416. Its totient is φ = 1441977120.

The previous prime is 2421321121. The next prime is 2421321127. The reversal of 2421321123 is 3211231242.

It is not a de Polignac number, because 2421321123 - 2¹ = 2421321121 is a prime.

It is a super-2 number, since 2×2421321123² = 11725591961371962258, which contains 22 as substring.

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 2421321123.

It is not an unprimeable number, because it can be changed into a prime (2421321121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1000165 + ... + 1002582.

It is an arithmetic number, because the mean of its divisors is an integer number (224307776).

Almost surely, 2^2421321123 is an apocalyptic number.

2421321123 is a deficient number, since it is larger than the sum of its proper divisors (1167603293).

2421321123 is a wasteful number, since it uses less digits than its factorization.

2421321123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002794.

The product of its digits is 576, while the sum is 21.

The square root of 2421321123 is about 49206.9214948466. The cubic root of 2421321123 is about 1342.8189566352.

Adding to 2421321123 its reverse (3211231242), we get a palindrome (5632552365).

The spelling of 2421321123 in words is "two billion, four hundred twenty-one million, three hundred twenty-one thousand, one hundred twenty-three".