3501360521221 has 4 divisors (see below), whose sum is σ = 3503324269792. Its totient is φ = 3499396772652.

The previous prime is 3501360521209. The next prime is 3501360521231. The reversal of 3501360521221 is 1221250631053.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3501360521221 - 2¹⁹ = 3501359996933 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 (3501360521231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 981871611 + ... + 981875176.

It is an arithmetic number, because the mean of its divisors is an integer number (875831067448).

Almost surely, 2^{3501360521221} is an apocalyptic number.

It is an amenable number.

3501360521221 is a deficient number, since it is larger than the sum of its proper divisors (1963748571).

3501360521221 is a wasteful number, since it uses less digits than its factorization.

3501360521221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963748570.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 3501360521221 in words is "three trillion, five hundred one billion, three hundred sixty million, five hundred twenty-one thousand, two hundred twenty-one".