220011222122101 has 4 divisors (see below), whose sum is σ = 223025074480012. Its totient is φ = 216997369764192.

The previous prime is 220011222122051. The next prime is 220011222122177. The reversal of 220011222122101 is 101221222110022.

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 89707399017201 + 130303823104900 = 9471399^2 + 11415070^2 .

It is a cyclic number.

It is not a de Polignac number, because 220011222122101 - 2³³ = 220002632187509 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 (220011222122501) 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, 1506926178846 + ... + 1506926178991.

It is an arithmetic number, because the mean of its divisors is an integer number (55756268620003).

Almost surely, 2^{220011222122101} is an apocalyptic number.

It is an amenable number.

220011222122101 is a deficient number, since it is larger than the sum of its proper divisors (3013852357911).

220011222122101 is an equidigital number, since it uses as much as digits as its factorization.

220011222122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3013852357910.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 220011222122101 its reverse (101221222110022), we get a palindrome (321232444232123).

The spelling of 220011222122101 in words is "two hundred twenty trillion, eleven billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred one".