1220111000111 has 8 divisors (see below), whose sum is σ = 1249030617024. Its totient is φ = 1191314708640.

The previous prime is 1220111000099. The next prime is 1220111000167. The reversal of 1220111000111 is 1110001110221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220111000111 - 2²² = 1220106805807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220111000092 and 1220111000101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220111000611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30811340 + ... + 30850913.

It is an arithmetic number, because the mean of its divisors is an integer number (156128827128).

Almost surely, 2^{1220111000111} is an apocalyptic number.

1220111000111 is a deficient number, since it is larger than the sum of its proper divisors (28919616913).

1220111000111 is an equidigital number, since it uses as much as digits as its factorization.

1220111000111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61662721.

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

Adding to 1220111000111 its reverse (1110001110221), we get a palindrome (2330112110332).

The spelling of 1220111000111 in words is "one trillion, two hundred twenty billion, one hundred eleven million, one hundred eleven", and thus it is an aban number.