1200221001101 has 16 divisors (see below), whose sum is σ = 1260885964800. Its totient is φ = 1140265090800.

The previous prime is 1200221001061. The next prime is 1200221001131. The reversal of 1200221001101 is 1011001220021.

It is a cyclic number.

It is not a de Polignac number, because 1200221001101 - 2⁶ = 1200221001037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200221001131) 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 15 ways as a sum of consecutive naturals, for example, 27633800 + ... + 27677198.

It is an arithmetic number, because the mean of its divisors is an integer number (78805372800).

Almost surely, 2^{1200221001101} is an apocalyptic number.

It is an amenable number.

1200221001101 is a deficient number, since it is larger than the sum of its proper divisors (60664963699).

1200221001101 is a wasteful number, since it uses less digits than its factorization.

1200221001101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51536.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1200221001101 its reverse (1011001220021), we get a palindrome (2211222221122).

The spelling of 1200221001101 in words is "one trillion, two hundred billion, two hundred twenty-one million, one thousand, one hundred one".