221102110021101 has 16 divisors (see below), whose sum is σ = 303131327721600. Its totient is φ = 143246646099648.

The previous prime is 221102110021099. The next prime is 221102110021129. The reversal of 221102110021101 is 101120011201122.

It is a happy number.

It is not a de Polignac number, because 221102110021101 - 2¹ = 221102110021099 is a prime.

It is a super-2 number, since 2×221102110021101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221102110021141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1186981306 + ... + 1187167563.

It is an arithmetic number, because the mean of its divisors is an integer number (18945707982600).

Almost surely, 2^{221102110021101} is an apocalyptic number.

It is an amenable number.

221102110021101 is a deficient number, since it is larger than the sum of its proper divisors (82029217700499).

221102110021101 is a wasteful number, since it uses less digits than its factorization.

221102110021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2374149748.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 221102110021101 its reverse (101120011201122), we get a palindrome (322222121222223).

The spelling of 221102110021101 in words is "two hundred twenty-one trillion, one hundred two billion, one hundred ten million, twenty-one thousand, one hundred one".