221200220102101 has 4 divisors (see below), whose sum is σ = 232842336949600. Its totient is φ = 209558103254604.

The previous prime is 221200220101877. The next prime is 221200220102119. The reversal of 221200220102101 is 101201022002122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221200220102101 - 2³³ = 221191630167509 is a prime.

It is a super-2 number, since 2×221200220102101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221200220102401) 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 3 ways as a sum of consecutive naturals, for example, 5821058423721 + ... + 5821058423758.

It is an arithmetic number, because the mean of its divisors is an integer number (58210584237400).

Almost surely, 2^{221200220102101} is an apocalyptic number.

It is an amenable number.

221200220102101 is a deficient number, since it is larger than the sum of its proper divisors (11642116847499).

221200220102101 is a wasteful number, since it uses less digits than its factorization.

221200220102101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11642116847498.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221200220102101 its reverse (101201022002122), we get a palindrome (322401242104223).

The spelling of 221200220102101 in words is "two hundred twenty-one trillion, two hundred billion, two hundred twenty million, one hundred two thousand, one hundred one".