511201006220 has 12 divisors (see below), whose sum is σ = 1073522113104. Its totient is φ = 204480402480.

The previous prime is 511201006181. The next prime is 511201006231. The reversal of 511201006220 is 22600102115.

It is a super-2 number, since 2×511201006220² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 25560050311 = 511201006220 / (5 + 1 + 1 + 2 + 0 + 1 + 0 + 0 + 6 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 511201006192 and 511201006201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12780025136 + ... + 12780025175.

It is an arithmetic number, because the mean of its divisors is an integer number (89460176092).

Almost surely, 2^511201006220 is an apocalyptic number.

It is an amenable number.

511201006220 is an abundant number, since it is smaller than the sum of its proper divisors (562321106884).

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

511201006220 is a wasteful number, since it uses less digits than its factorization.

511201006220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25560050320 (or 25560050318 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 511201006220 its reverse (22600102115), we get a palindrome (533801108335).

The spelling of 511201006220 in words is "five hundred eleven billion, two hundred one million, six thousand, two hundred twenty".