6144222521 has 4 divisors (see below), whose sum is σ = 6150253200. Its totient is φ = 6138191844.

The previous prime is 6144222509. The next prime is 6144222583. The reversal of 6144222521 is 1252224416.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6144222521 - 2¹⁰ = 6144221497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6144222221) 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, 3013811 + ... + 3015848.

It is an arithmetic number, because the mean of its divisors is an integer number (1537563300).

Almost surely, 2^6144222521 is an apocalyptic number.

It is an amenable number.

6144222521 is a deficient number, since it is larger than the sum of its proper divisors (6030679).

6144222521 is a wasteful number, since it uses less digits than its factorization.

6144222521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6030678.

The product of its digits is 7680, while the sum is 29.

The square root of 6144222521 is about 78385.0911908636. The cubic root of 6144222521 is about 1831.5648991863.

Adding to 6144222521 its reverse (1252224416), we get a palindrome (7396446937).

The spelling of 6144222521 in words is "six billion, one hundred forty-four million, two hundred twenty-two thousand, five hundred twenty-one".