501135222 has 64 divisors (see below), whose sum is σ = 1209139200. Its totient is φ = 135263520.

The previous prime is 501135211. The next prime is 501135233. The reversal of 501135222 is 222531105.

It is an interprime number because it is at equal distance from previous prime (501135211) and next prime (501135233).

It is a super-2 number, since 2×501135222² = 502273021457978568, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 391179 + ... + 392457.

It is an arithmetic number, because the mean of its divisors is an integer number (18892800).

Almost surely, 2^501135222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 501135222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (604569600).

501135222 is an abundant number, since it is smaller than the sum of its proper divisors (708003978).

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

501135222 is a wasteful number, since it uses less digits than its factorization.

501135222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 501135222 is about 22386.0497185189. The cubic root of 501135222 is about 794.3007561490.

Adding to 501135222 its reverse (222531105), we get a palindrome (723666327).

The spelling of 501135222 in words is "five hundred one million, one hundred thirty-five thousand, two hundred twenty-two".