501010021122 has 96 divisors (see below), whose sum is σ = 1098741475008. Its totient is φ = 152217980928.

The previous prime is 501010021091. The next prime is 501010021129. The reversal of 501010021122 is 221120010105.

It is a super-2 number, since 2×501010021122² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (501010021129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33952498 + ... + 33967250.

It is an arithmetic number, because the mean of its divisors is an integer number (11445223698).

Almost surely, 2^501010021122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 501010021122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (549370737504).

501010021122 is an abundant number, since it is smaller than the sum of its proper divisors (597731453886).

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

501010021122 is a wasteful number, since it uses less digits than its factorization.

501010021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15204 (or 15191 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 501010021122 its reverse (221120010105), we get a palindrome (722130031227).

The spelling of 501010021122 in words is "five hundred one billion, ten million, twenty-one thousand, one hundred twenty-two".