220001101202101 has 4 divisors (see below), whose sum is σ = 220002313504204. Its totient is φ = 219999888900000.

The previous prime is 220001101202093. The next prime is 220001101202143. The reversal of 220001101202101 is 101202101100022.

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 207732551184900 + 12268550017201 = 14412930^2 + 3502649^2 .

It is a cyclic number.

It is not a de Polignac number, because 220001101202101 - 2³ = 220001101202093 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 (220001101202191) 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, 605878800 + ... + 606241801.

It is an arithmetic number, because the mean of its divisors is an integer number (55000578376051).

Almost surely, 2^{220001101202101} is an apocalyptic number.

It is an amenable number.

220001101202101 is a deficient number, since it is larger than the sum of its proper divisors (1212302103).

220001101202101 is a wasteful number, since it uses less digits than its factorization.

220001101202101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212302102.

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

Adding to 220001101202101 its reverse (101202101100022), we get a palindrome (321203202302123).

The spelling of 220001101202101 in words is "two hundred twenty trillion, one billion, one hundred one million, two hundred two thousand, one hundred one".