1220011100111 has 4 divisors (see below), whose sum is σ = 1234710029112. Its totient is φ = 1205312171112.

The previous prime is 1220011100069. The next prime is 1220011100117. The reversal of 1220011100111 is 1110011100221.

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 1220011100111 - 2²² = 1220006905807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220011100092 and 1220011100101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220011100117) 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, 7349464376 + ... + 7349464541.

It is an arithmetic number, because the mean of its divisors is an integer number (308677507278).

Almost surely, 2^{1220011100111} is an apocalyptic number.

1220011100111 is a deficient number, since it is larger than the sum of its proper divisors (14698929001).

1220011100111 is an equidigital number, since it uses as much as digits as its factorization.

1220011100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14698929000.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1220011100111 its reverse (1110011100221), we get a palindrome (2330022200332).

The spelling of 1220011100111 in words is "one trillion, two hundred twenty billion, eleven million, one hundred thousand, one hundred eleven".