2124343221 has 32 divisors (see below), whose sum is σ = 3803025408. Its totient is φ = 1018664640.

The previous prime is 2124343219. The next prime is 2124343223. The reversal of 2124343221 is 1223434212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2124343219) and next prime (2124343223).

It is not a de Polignac number, because 2124343221 - 2¹ = 2124343219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2124343191 and 2124343200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2124343223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 350701 + ... + 356706.

It is an arithmetic number, because the mean of its divisors is an integer number (118844544).

Almost surely, 2^2124343221 is an apocalyptic number.

2124343221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2124343221 is a deficient number, since it is larger than the sum of its proper divisors (1678682187).

2124343221 is a wasteful number, since it uses less digits than its factorization.

2124343221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707441.

The product of its digits is 2304, while the sum is 24.

The square root of 2124343221 is about 46090.5979674814. The cubic root of 2124343221 is about 1285.5083296220.

Adding to 2124343221 its reverse (1223434212), we get a palindrome (3347777433).

Subtracting from 2124343221 its reverse (1223434212), we obtain a palindrome (900909009).

The spelling of 2124343221 in words is "two billion, one hundred twenty-four million, three hundred forty-three thousand, two hundred twenty-one".