220102020101 has 4 divisors (see below), whose sum is σ = 233049197772. Its totient is φ = 207154842432.

The previous prime is 220102020071. The next prime is 220102020107. The reversal of 220102020101 is 101020201022.

It is a happy number.

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 96109300225 + 123992719876 = 310015^2 + 352126^2 .

It is a cyclic number.

It is not a de Polignac number, because 220102020101 - 2⁶ = 220102020037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220102020107) 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, 6473588810 + ... + 6473588843.

It is an arithmetic number, because the mean of its divisors is an integer number (58262299443).

Almost surely, 2^220102020101 is an apocalyptic number.

It is an amenable number.

220102020101 is a deficient number, since it is larger than the sum of its proper divisors (12947177671).

220102020101 is a wasteful number, since it uses less digits than its factorization.

220102020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12947177670.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 220102020101 its reverse (101020201022), we get a palindrome (321122221123).

The spelling of 220102020101 in words is "two hundred twenty billion, one hundred two million, twenty thousand, one hundred one".