222101122200221 has 4 divisors (see below), whose sum is σ = 242292133309344. Its totient is φ = 201910111091100.

The previous prime is 222101122200211. The next prime is 222101122200283. The reversal of 222101122200221 is 122002221101222.

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 222101122200221 - 2⁶ = 222101122200157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222101122200193 and 222101122200202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222101122200211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10095505554545 + ... + 10095505554566.

It is an arithmetic number, because the mean of its divisors is an integer number (60573033327336).

Almost surely, 2^{222101122200221} is an apocalyptic number.

It is an amenable number.

222101122200221 is a deficient number, since it is larger than the sum of its proper divisors (20191011109123).

222101122200221 is a wasteful number, since it uses less digits than its factorization.

222101122200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20191011109122.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222101122200221 its reverse (122002221101222), we get a palindrome (344103343301443).

The spelling of 222101122200221 in words is "two hundred twenty-two trillion, one hundred one billion, one hundred twenty-two million, two hundred thousand, two hundred twenty-one".