221002100112021 has 8 divisors (see below), whose sum is σ = 295198496381664. Its totient is φ = 147070218625200.

The previous prime is 221002100111987. The next prime is 221002100112047. The reversal of 221002100112021 is 120211001200122.

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

It is not a de Polignac number, because 221002100112021 - 2¹⁵ = 221002100079253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221002100112071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66128693755 + ... + 66128697096.

It is an arithmetic number, because the mean of its divisors is an integer number (36899812047708).

Almost surely, 2^{221002100112021} is an apocalyptic number.

It is an amenable number.

221002100112021 is a deficient number, since it is larger than the sum of its proper divisors (74196396269643).

221002100112021 is a wasteful number, since it uses less digits than its factorization.

221002100112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132257391411.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221002100112021 its reverse (120211001200122), we get a palindrome (341213101312143).

The spelling of 221002100112021 in words is "two hundred twenty-one trillion, two billion, one hundred million, one hundred twelve thousand, twenty-one".