511220501022 has 32 divisors (see below), whose sum is σ = 1274731640064. Its totient is φ = 132784545600.

The previous prime is 511220500979. The next prime is 511220501041. The reversal of 511220501022 is 220105022115.

It is a super-2 number, since 2×511220501022² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 511220501022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 553268479 + ... + 553269402.

It is an arithmetic number, because the mean of its divisors is an integer number (39835363752).

Almost surely, 2^511220501022 is an apocalyptic number.

511220501022 is an abundant number, since it is smaller than the sum of its proper divisors (763511139042).

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

511220501022 is a wasteful number, since it uses less digits than its factorization.

511220501022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106537904.

The product of its (nonzero) digits is 400, while the sum is 21.

Adding to 511220501022 its reverse (220105022115), we get a palindrome (731325523137).

The spelling of 511220501022 in words is "five hundred eleven billion, two hundred twenty million, five hundred one thousand, twenty-two".