220101212101 has 4 divisors (see below), whose sum is σ = 227690909100. Its totient is φ = 212511515104.

The previous prime is 220101212087. The next prime is 220101212119. The reversal of 220101212101 is 101212101022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 186515151876 + 33586060225 = 431874^2 + 183265^2 .

It is a cyclic number.

It is not a de Polignac number, because 220101212101 - 2¹³ = 220101203909 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 (220101212161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3794848456 + ... + 3794848513.

It is an arithmetic number, because the mean of its divisors is an integer number (56922727275).

Almost surely, 2^220101212101 is an apocalyptic number.

It is an amenable number.

220101212101 is a deficient number, since it is larger than the sum of its proper divisors (7589696999).

220101212101 is an equidigital number, since it uses as much as digits as its factorization.

220101212101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7589696998.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 220101212101 its reverse (101212101022), we get a palindrome (321313313123).

The spelling of 220101212101 in words is "two hundred twenty billion, one hundred one million, two hundred twelve thousand, one hundred one".