221010202101 has 16 divisors (see below), whose sum is σ = 317404377920. Its totient is φ = 135982108800.

The previous prime is 221010202099. The next prime is 221010202109. The reversal of 221010202101 is 101202010122.

It is not a de Polignac number, because 221010202101 - 2¹ = 221010202099 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 (221010202109) 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, 280000 + ... + 721401.

It is an arithmetic number, because the mean of its divisors is an integer number (19837773620).

Almost surely, 2^221010202101 is an apocalyptic number.

It is an amenable number.

221010202101 is a deficient number, since it is larger than the sum of its proper divisors (96394175819).

221010202101 is a wasteful number, since it uses less digits than its factorization.

221010202101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007076.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221010202101 its reverse (101202010122), we get a palindrome (322212212223).

The spelling of 221010202101 in words is "two hundred twenty-one billion, ten million, two hundred two thousand, one hundred one".