1201110100101 has 16 divisors (see below), whose sum is σ = 1779586011520. Its totient is φ = 800666428320.

The previous prime is 1201110100097. The next prime is 1201110100133. The reversal of 1201110100101 is 1010010111021.

It is not a de Polignac number, because 1201110100101 - 2² = 1201110100097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201110104101) 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, 1745680 + ... + 2334441.

It is an arithmetic number, because the mean of its divisors is an integer number (111224125720).

Almost surely, 2^{1201110100101} is an apocalyptic number.

It is an amenable number.

1201110100101 is a deficient number, since it is larger than the sum of its proper divisors (578475911419).

1201110100101 is a wasteful number, since it uses less digits than its factorization.

1201110100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091033 (or 4091027 counting only the distinct ones).

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

Adding to 1201110100101 its reverse (1010010111021), we get a palindrome (2211120211122).

The spelling of 1201110100101 in words is "one trillion, two hundred one billion, one hundred ten million, one hundred thousand, one hundred one".