1201220000111 has 4 divisors (see below), whose sum is σ = 1264442105400. Its totient is φ = 1137997894824.

The previous prime is 1201220000107. The next prime is 1201220000117. The reversal of 1201220000111 is 1110000221021.

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 1201220000111 - 2² = 1201220000107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201220000092 and 1201220000101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201220000117) 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, 31611052616 + ... + 31611052653.

It is an arithmetic number, because the mean of its divisors is an integer number (316110526350).

Almost surely, 2^{1201220000111} is an apocalyptic number.

1201220000111 is a deficient number, since it is larger than the sum of its proper divisors (63222105289).

1201220000111 is an equidigital number, since it uses as much as digits as its factorization.

1201220000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63222105288.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1201220000111 its reverse (1110000221021), we get a palindrome (2311220221132).

The spelling of 1201220000111 in words is "one trillion, two hundred one billion, two hundred twenty million, one hundred eleven", and thus it is an aban number.