221220022101 has 32 divisors (see below), whose sum is σ = 319439339520. Its totient is φ = 135368798400.

The previous prime is 221220022099. The next prime is 221220022141. The reversal of 221220022101 is 101220022122.

It is not a de Polignac number, because 221220022101 - 2¹ = 221220022099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221220022141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27043230 + ... + 27051408.

It is an arithmetic number, because the mean of its divisors is an integer number (9982479360).

Almost surely, 2^221220022101 is an apocalyptic number.

It is an amenable number.

221220022101 is a deficient number, since it is larger than the sum of its proper divisors (98219317419).

221220022101 is a wasteful number, since it uses less digits than its factorization.

221220022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12017.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221220022101 its reverse (101220022122), we get a palindrome (322440044223).

The spelling of 221220022101 in words is "two hundred twenty-one billion, two hundred twenty million, twenty-two thousand, one hundred one".