1011220100111 has 32 divisors (see below), whose sum is σ = 1106802278400. Its totient is φ = 918320094720.

The previous prime is 1011220100063. The next prime is 1011220100123. The reversal of 1011220100111 is 1110010221101.

It is a cyclic number.

It is not a de Polignac number, because 1011220100111 - 2⁶ = 1011220100047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011220100092 and 1011220100101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011220100141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238436951 + ... + 238441191.

It is an arithmetic number, because the mean of its divisors is an integer number (34587571200).

Almost surely, 2^{1011220100111} is an apocalyptic number.

1011220100111 is a deficient number, since it is larger than the sum of its proper divisors (95582178289).

1011220100111 is a wasteful number, since it uses less digits than its factorization.

1011220100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5559.

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

Adding to 1011220100111 its reverse (1110010221101), we get a palindrome (2121230321212).

The spelling of 1011220100111 in words is "one trillion, eleven billion, two hundred twenty million, one hundred thousand, one hundred eleven".