6355241221 has 8 divisors (see below), whose sum is σ = 7513585920. Its totient is φ = 5259509808.

The previous prime is 6355241219. The next prime is 6355241261. The reversal of 6355241221 is 1221425536.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6355241221 - 2¹ = 6355241219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6355241261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15653101 + ... + 15653506.

It is an arithmetic number, because the mean of its divisors is an integer number (939198240).

Almost surely, 2^6355241221 is an apocalyptic number.

It is an amenable number.

6355241221 is a deficient number, since it is larger than the sum of its proper divisors (1158344699).

6355241221 is a wasteful number, since it uses less digits than its factorization.

6355241221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31306643.

The product of its digits is 14400, while the sum is 31.

The square root of 6355241221 is about 79719.7668147618. The cubic root of 6355241221 is about 1852.2972407867.

Adding to 6355241221 its reverse (1221425536), we get a palindrome (7576666757).

The spelling of 6355241221 in words is "six billion, three hundred fifty-five million, two hundred forty-one thousand, two hundred twenty-one".