5161222220 has 192 divisors, whose sum is σ = 14084582400. Its totient is φ = 1541514240.

The previous prime is 5161222211. The next prime is 5161222243. The reversal of 5161222220 is 222221615.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7279226 + ... + 7279934.

It is an arithmetic number, because the mean of its divisors is an integer number (73357200).

Almost surely, 2^5161222220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5161222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7042291200).

5161222220 is an abundant number, since it is smaller than the sum of its proper divisors (8923360180).

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

5161222220 is a wasteful number, since it uses less digits than its factorization.

5161222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928 (or 926 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 5161222220 is about 71841.6468352445. The cubic root of 5161222220 is about 1728.1609445679.

Adding to 5161222220 its reverse (222221615), we get a palindrome (5383443835).

The spelling of 5161222220 in words is "five billion, one hundred sixty-one million, two hundred twenty-two thousand, two hundred twenty".