221122022101 has 4 divisors (see below), whose sum is σ = 226264394752. Its totient is φ = 215979649452.

The previous prime is 221122022063. The next prime is 221122022113. The reversal of 221122022101 is 101220221122.

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 221122022101 - 2⁷ = 221122021973 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 (221122022131) 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, 2571186261 + ... + 2571186346.

It is an arithmetic number, because the mean of its divisors is an integer number (56566098688).

Almost surely, 2^221122022101 is an apocalyptic number.

It is an amenable number.

221122022101 is a deficient number, since it is larger than the sum of its proper divisors (5142372651).

221122022101 is an equidigital number, since it uses as much as digits as its factorization.

221122022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5142372650.

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

Adding to 221122022101 its reverse (101220221122), we get a palindrome (322342243223).

The spelling of 221122022101 in words is "two hundred twenty-one billion, one hundred twenty-two million, twenty-two thousand, one hundred one".