501020221205 has 8 divisors (see below), whose sum is σ = 687113446272. Its totient is φ = 343556723088.

The previous prime is 501020221201. The next prime is 501020221211. The reversal of 501020221205 is 502122020105.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 501020221205 - 2² = 501020221201 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501020221201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7157431697 + ... + 7157431766.

It is an arithmetic number, because the mean of its divisors is an integer number (85889180784).

Almost surely, 2^501020221205 is an apocalyptic number.

It is an amenable number.

501020221205 is a deficient number, since it is larger than the sum of its proper divisors (186093225067).

501020221205 is a wasteful number, since it uses less digits than its factorization.

501020221205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14314863475.

The product of its (nonzero) digits is 400, while the sum is 20.

The spelling of 501020221205 in words is "five hundred one billion, twenty million, two hundred twenty-one thousand, two hundred five".