220022021101 has 4 divisors (see below), whose sum is σ = 220839947100. Its totient is φ = 219204095104.

The previous prime is 220022021071. The next prime is 220022021129. The reversal of 220022021101 is 101120220022.

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 94049555625 + 125972465476 = 306675^2 + 354926^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220022021101 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 (220022028101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408962596 + ... + 408963133.

It is an arithmetic number, because the mean of its divisors is an integer number (55209986775).

Almost surely, 2^220022021101 is an apocalyptic number.

It is an amenable number.

220022021101 is a deficient number, since it is larger than the sum of its proper divisors (817925999).

220022021101 is an equidigital number, since it uses as much as digits as its factorization.

220022021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817925998.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 220022021101 its reverse (101120220022), we get a palindrome (321142241123).

The spelling of 220022021101 in words is "two hundred twenty billion, twenty-two million, twenty-one thousand, one hundred one".