1220202101111 has 12 divisors (see below), whose sum is σ = 1481372400048. Its totient is φ = 984364718592.

The previous prime is 1220202101059. The next prime is 1220202101227. The reversal of 1220202101111 is 1111012020221.

It is not a de Polignac number, because 1220202101111 - 2¹⁴ = 1220202084727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220202101311) 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 11 ways as a sum of consecutive naturals, for example, 301580306 + ... + 301584351.

It is an arithmetic number, because the mean of its divisors is an integer number (123447700004).

Almost surely, 2^{1220202101111} is an apocalyptic number.

1220202101111 is a deficient number, since it is larger than the sum of its proper divisors (261170298937).

1220202101111 is an equidigital number, since it uses as much as digits as its factorization.

1220202101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603164698 (or 603164681 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1220202101111 its reverse (1111012020221), we get a palindrome (2331214121332).

The spelling of 1220202101111 in words is "one trillion, two hundred twenty billion, two hundred two million, one hundred one thousand, one hundred eleven".