221002101220101 has 16 divisors (see below), whose sum is σ = 300229789901184. Its totient is φ = 144554582978624.

The previous prime is 221002101220091. The next prime is 221002101220163. The reversal of 221002101220101 is 101022101200122.

It is a cyclic number.

It is not a de Polignac number, because 221002101220101 - 2²² = 221002097025797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221002101220301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151597675 + ... + 153048551.

It is an arithmetic number, because the mean of its divisors is an integer number (18764361868824).

Almost surely, 2^{221002101220101} is an apocalyptic number.

It is an amenable number.

221002101220101 is a deficient number, since it is larger than the sum of its proper divisors (79227688681083).

221002101220101 is a wasteful number, since it uses less digits than its factorization.

221002101220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408940.

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

Adding to 221002101220101 its reverse (101022101200122), we get a palindrome (322024202420223).

The spelling of 221002101220101 in words is "two hundred twenty-one trillion, two billion, one hundred one million, two hundred twenty thousand, one hundred one".