220121220111113 has 4 divisors (see below), whose sum is σ = 220183807894020. Its totient is φ = 220058632328208.

The previous prime is 220121220111109. The next prime is 220121220111269. The reversal of 220121220111113 is 311111022121022.

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 116835626756809 + 103285593354304 = 10809053^2 + 10162952^2 .

It is a cyclic number.

It is not a de Polignac number, because 220121220111113 - 2² = 220121220111109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220121220116113) 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, 31293886178 + ... + 31293893211.

It is an arithmetic number, because the mean of its divisors is an integer number (55045951973505).

Almost surely, 2^{220121220111113} is an apocalyptic number.

It is an amenable number.

220121220111113 is a deficient number, since it is larger than the sum of its proper divisors (62587782907).

220121220111113 is an equidigital number, since it uses as much as digits as its factorization.

220121220111113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62587782906.

The product of its (nonzero) digits is 96, while the sum is 20.

Adding to 220121220111113 its reverse (311111022121022), we get a palindrome (531232242232135).

The spelling of 220121220111113 in words is "two hundred twenty trillion, one hundred twenty-one billion, two hundred twenty million, one hundred eleven thousand, one hundred thirteen".