4121331220 has 24 divisors (see below), whose sum is σ = 8656417224. Its totient is φ = 1648223616.

The previous prime is 4121331217. The next prime is 4121331223. The reversal of 4121331220 is 221331214.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4121331217) and next prime (4121331223).

It can be written as a sum of positive squares in 4 ways, for example, as 228070404 + 3893260816 = 15102^2 + 62396^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4121331223) 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, 111834 + ... + 144046.

It is an arithmetic number, because the mean of its divisors is an integer number (360684051).

Almost surely, 2^4121331220 is an apocalyptic number.

It is an amenable number.

4121331220 is an abundant number, since it is smaller than the sum of its proper divisors (4535086004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4121331220 is a wasteful number, since it uses less digits than its factorization.

4121331220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38619 (or 38617 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 4121331220 is about 64197.5951262974. The cubic root of 4121331220 is about 1603.2915598153.

Adding to 4121331220 its reverse (221331214), we get a palindrome (4342662434).

The spelling of 4121331220 in words is "four billion, one hundred twenty-one million, three hundred thirty-one thousand, two hundred twenty".