221200102101 has 16 divisors (see below), whose sum is σ = 322968983040. Its totient is φ = 133550926320.

The previous prime is 221200102091. The next prime is 221200102133. The reversal of 221200102101 is 101201002122.

It is not a de Polignac number, because 221200102101 - 2⁷ = 221200101973 is a prime.

It is a super-2 number, since 2×221200102101² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221200102601) 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, 12734731 + ... + 12752088.

It is an arithmetic number, because the mean of its divisors is an integer number (20185561440).

Almost surely, 2^221200102101 is an apocalyptic number.

It is an amenable number.

221200102101 is a deficient number, since it is larger than the sum of its proper divisors (101768880939).

221200102101 is a wasteful number, since it uses less digits than its factorization.

221200102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25487096.

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

Adding to 221200102101 its reverse (101201002122), we get a palindrome (322401104223).

The spelling of 221200102101 in words is "two hundred twenty-one billion, two hundred million, one hundred two thousand, one hundred one".