502120221001 has 12 divisors (see below), whose sum is σ = 584316403860. Its totient is φ = 430228592640.

The previous prime is 502120220999. The next prime is 502120221017. The reversal of 502120221001 is 100122021205.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 106383607225 + 395736613776 = 326165^2 + 629076^2 .

It is not a de Polignac number, because 502120221001 - 2¹ = 502120220999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (502120221041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1773660 + ... + 2037181.

It is an arithmetic number, because the mean of its divisors is an integer number (48693033655).

Almost surely, 2^502120221001 is an apocalyptic number.

It is an amenable number.

502120221001 is a deficient number, since it is larger than the sum of its proper divisors (82196182859).

502120221001 is a wasteful number, since it uses less digits than its factorization.

502120221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3813544 (or 3813537 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

Adding to 502120221001 its reverse (100122021205), we get a palindrome (602242242206).

The spelling of 502120221001 in words is "five hundred two billion, one hundred twenty million, two hundred twenty-one thousand, one".