1100111210001 has 6 divisors (see below), whose sum is σ = 1589049525570. Its totient is φ = 733407473328.

The previous prime is 1100111209991. The next prime is 1100111210021. The reversal of 1100111210001 is 1000121110011.

It can be written as a sum of positive squares in only one way, i.e., 650319667776 + 449791542225 = 806424^2 + 670665^2 .

It is not a de Polignac number, because 1100111210001 - 2⁵ = 1100111209969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 122234578889 = 1100111210001 / (1 + 1 + 0 + 0 + 1 + 1 + 1 + 2 + 1 + 0 + 0 + 0 + 1).

It is not an unprimeable number, because it can be changed into a prime (1100111210021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61117289436 + ... + 61117289453.

It is an arithmetic number, because the mean of its divisors is an integer number (264841587595).

Almost surely, 2^{1100111210001} is an apocalyptic number.

It is an amenable number.

1100111210001 is a deficient number, since it is larger than the sum of its proper divisors (488938315569).

1100111210001 is a wasteful number, since it uses less digits than its factorization.

1100111210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122234578895 (or 122234578892 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 1100111210001 its reverse (1000121110011), we get a palindrome (2100232320012).

The spelling of 1100111210001 in words is "one trillion, one hundred billion, one hundred eleven million, two hundred ten thousand, one".