220001020111 has 4 divisors (see below), whose sum is σ = 220002927592. Its totient is φ = 219999112632.

The previous prime is 220001020087. The next prime is 220001020123. The reversal of 220001020111 is 111020100022.

220001020111 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 is a cyclic number.

It is not a de Polignac number, because 220001020111 - 2¹⁹ = 220000495823 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 (220001020711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 768780 + ... + 1015393.

It is an arithmetic number, because the mean of its divisors is an integer number (55000731898).

Almost surely, 2^220001020111 is an apocalyptic number.

220001020111 is a deficient number, since it is larger than the sum of its proper divisors (1907481).

220001020111 is a wasteful number, since it uses less digits than its factorization.

220001020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907480.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 220001020111 its reverse (111020100022), we get a palindrome (331021120133).

The spelling of 220001020111 in words is "two hundred twenty billion, one million, twenty thousand, one hundred eleven".