1201211000111 has 16 divisors (see below), whose sum is σ = 1248575845440. Its totient is φ = 1154737658880.

The previous prime is 1201211000053. The next prime is 1201211000123. The reversal of 1201211000111 is 1110001121021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201211000111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201211000092 and 1201211000101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201211000131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2897510 + ... + 3286028.

It is an arithmetic number, because the mean of its divisors is an integer number (78035990340).

Almost surely, 2^{1201211000111} is an apocalyptic number.

1201211000111 is a deficient number, since it is larger than the sum of its proper divisors (47364845329).

1201211000111 is a wasteful number, since it uses less digits than its factorization.

1201211000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389666.

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

Adding to 1201211000111 its reverse (1110001121021), we get a palindrome (2311212121132).

The spelling of 1201211000111 in words is "one trillion, two hundred one billion, two hundred eleven million, one hundred eleven", and thus it is an aban number.