501221011002 has 32 divisors (see below), whose sum is σ = 1037412014400. Its totient is φ = 161249816448.

The previous prime is 501221010959. The next prime is 501221011021. The reversal of 501221011002 is 200110122105.

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, 109723 + ... + 1007214.

It is an arithmetic number, because the mean of its divisors is an integer number (32419125450).

Almost surely, 2^501221011002 is an apocalyptic number.

501221011002 is an abundant number, since it is smaller than the sum of its proper divisors (536191003398).

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

501221011002 is a wasteful number, since it uses less digits than its factorization.

501221011002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119550.

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

Adding to 501221011002 its reverse (200110122105), we get a palindrome (701331133107).

The spelling of 501221011002 in words is "five hundred one billion, two hundred twenty-one million, eleven thousand, two".