6321221236 has 48 divisors (see below), whose sum is σ = 12248087040. Its totient is φ = 2830554720.

The previous prime is 6321221233. The next prime is 6321221251.

6321221236 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6321221233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1381825 + ... + 1386391.

It is an arithmetic number, because the mean of its divisors is an integer number (255168480).

Almost surely, 2^6321221236 is an apocalyptic number.

It is an amenable number.

6321221236 is a deficient number, since it is larger than the sum of its proper divisors (5926865804).

6321221236 is a wasteful number, since it uses less digits than its factorization.

6321221236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5044 (or 5042 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

The square root of 6321221236 is about 79506.1081678634. The cubic root of 6321221236 is about 1848.9861731193.

It can be divided in two parts, 63212 and 21236, that added together give a palindrome (84448).

The spelling of 6321221236 in words is "six billion, three hundred twenty-one million, two hundred twenty-one thousand, two hundred thirty-six".