220111020220001 has 4 divisors (see below), whose sum is σ = 220114854095892. Its totient is φ = 220107186344112.

The previous prime is 220111020219997. The next prime is 220111020220019. The reversal of 220111020220001 is 100022020111022.

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 16928089869376 + 203182930350625 = 4114376^2 + 14254225^2 .

It is a cyclic number.

It is not a de Polignac number, because 220111020220001 - 2² = 220111020219997 is a prime.

It is a super-2 number, since 2×220111020220001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220111020210001) 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, 1916851826 + ... + 1916966651.

It is an arithmetic number, because the mean of its divisors is an integer number (55028713523973).

Almost surely, 2^{220111020220001} is an apocalyptic number.

It is an amenable number.

220111020220001 is a deficient number, since it is larger than the sum of its proper divisors (3833875891).

220111020220001 is an equidigital number, since it uses as much as digits as its factorization.

220111020220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3833875890.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 220111020220001 its reverse (100022020111022), we get a palindrome (320133040331023).

The spelling of 220111020220001 in words is "two hundred twenty trillion, one hundred eleven billion, twenty million, two hundred twenty thousand, one".