1020220201111 has 4 divisors (see below), whose sum is σ = 1020225304800. Its totient is φ = 1020215097424.

The previous prime is 1020220201087. The next prime is 1020220201129. The reversal of 1020220201111 is 1111020220201.

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 1020220201111 - 2¹⁷ = 1020220070039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020220201091 and 1020220201100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020220201141) 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, 2239231 + ... + 2656048.

It is an arithmetic number, because the mean of its divisors is an integer number (255056326200).

Almost surely, 2^{1020220201111} is an apocalyptic number.

1020220201111 is a deficient number, since it is larger than the sum of its proper divisors (5103689).

1020220201111 is an equidigital number, since it uses as much as digits as its factorization.

1020220201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5103688.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1020220201111 its reverse (1111020220201), we get a palindrome (2131240421312).

It can be divided in two parts, 1020220201 and 111, that multiplied together give a palindrome (113244442311).

The spelling of 1020220201111 in words is "one trillion, twenty billion, two hundred twenty million, two hundred one thousand, one hundred eleven".