220221210101 has 4 divisors (see below), whose sum is σ = 220229221632. Its totient is φ = 220213198572.

The previous prime is 220221210043. The next prime is 220221210109. The reversal of 220221210101 is 101012122022.

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 220221210101 - 2²² = 220217015797 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 (220221210109) 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, 3964391 + ... + 4019556.

It is an arithmetic number, because the mean of its divisors is an integer number (55057305408).

Almost surely, 2^220221210101 is an apocalyptic number.

It is an amenable number.

220221210101 is a deficient number, since it is larger than the sum of its proper divisors (8011531).

220221210101 is an equidigital number, since it uses as much as digits as its factorization.

220221210101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8011530.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220221210101 its reverse (101012122022), we get a palindrome (321233332123).

The spelling of 220221210101 in words is "two hundred twenty billion, two hundred twenty-one million, two hundred ten thousand, one hundred one".