221002100209973 has 8 divisors (see below), whose sum is σ = 230674715351808. Its totient is φ = 211334804082864.

The previous prime is 221002100209967. The next prime is 221002100209997. The reversal of 221002100209973 is 379902001200122.

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 221002100209973 - 2⁸ = 221002100209717 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 (221002100205973) 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, 1329668765 + ... + 1329834962.

It is an arithmetic number, because the mean of its divisors is an integer number (28834339418976).

Almost surely, 2^{221002100209973} is an apocalyptic number.

221002100209973 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

221002100209973 is a deficient number, since it is larger than the sum of its proper divisors (9672615141835).

221002100209973 is a wasteful number, since it uses less digits than its factorization.

221002100209973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659507363.

The product of its (nonzero) digits is 27216, while the sum is 38.

The spelling of 221002100209973 in words is "two hundred twenty-one trillion, two billion, one hundred million, two hundred nine thousand, nine hundred seventy-three".