220111122122201 has 4 divisors (see below), whose sum is σ = 227701160816100. Its totient is φ = 212521083428304.

The previous prime is 220111122122107. The next prime is 220111122122219. The reversal of 220111122122201 is 102221221111022.

220111122122201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 188933684449225 + 31177437672976 = 13745315^2 + 5583676^2 .

It is a cyclic number.

It is not a de Polignac number, because 220111122122201 - 2³⁰ = 220110048380377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220111122122251) 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, 3795019346906 + ... + 3795019346963.

It is an arithmetic number, because the mean of its divisors is an integer number (56925290204025).

Almost surely, 2^{220111122122201} is an apocalyptic number.

It is an amenable number.

220111122122201 is a deficient number, since it is larger than the sum of its proper divisors (7590038693899).

220111122122201 is an equidigital number, since it uses as much as digits as its factorization.

220111122122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7590038693898.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 220111122122201 its reverse (102221221111022), we get a palindrome (322332343233223).

The spelling of 220111122122201 in words is "two hundred twenty trillion, one hundred eleven billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred one".