1200011100101 has 8 divisors (see below), whose sum is σ = 1311138956064. Its totient is φ = 1089222567120.

The previous prime is 1200011100091. The next prime is 1200011100181. The reversal of 1200011100101 is 1010011100021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1200011100101 - 2⁶ = 1200011100037 is a prime.

It is a super-2 number, since 2×1200011100101² (a number of 25 digits) contains 22 as substring.

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 (1200011100181) 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 7 ways as a sum of consecutive naturals, for example, 84823346 + ... + 84837491.

It is an arithmetic number, because the mean of its divisors is an integer number (163892369508).

Almost surely, 2^{1200011100101} is an apocalyptic number.

1200011100101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200011100101 is a deficient number, since it is larger than the sum of its proper divisors (111127855963).

1200011100101 is a wasteful number, since it uses less digits than its factorization.

1200011100101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169661491.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 1200011100101 its reverse (1010011100021), we get a palindrome (2210022200122).

The spelling of 1200011100101 in words is "one trillion, two hundred billion, eleven million, one hundred thousand, one hundred one".