511122622220 has 96 divisors (see below), whose sum is σ = 1265787976320. Its totient is φ = 169719644160.

The previous prime is 511122622211. The next prime is 511122622229. The reversal of 511122622220 is 22226221115.

It is an interprime number because it is at equal distance from previous prime (511122622211) and next prime (511122622229).

It is a super-3 number, since 3×511122622220³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 511122622220.

It is not an unprimeable number, because it can be changed into a prime (511122622229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 461396 + ... + 1111364.

It is an arithmetic number, because the mean of its divisors is an integer number (13185291420).

Almost surely, 2^511122622220 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 511122622220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (632893988160).

511122622220 is an abundant number, since it is smaller than the sum of its proper divisors (754665354100).

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

511122622220 is a wasteful number, since it uses less digits than its factorization.

511122622220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650163 (or 650161 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 511122622220 its reverse (22226221115), we get a palindrome (533348843335).

The spelling of 511122622220 in words is "five hundred eleven billion, one hundred twenty-two million, six hundred twenty-two thousand, two hundred twenty".