1200101121101 has 4 divisors (see below), whose sum is σ = 1203886929372. Its totient is φ = 1196315312832.

The previous prime is 1200101121083. The next prime is 1200101121103. The reversal of 1200101121101 is 1011211010021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 233507367076 + 966593754025 = 483226^2 + 983155^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200101121101 - 2¹⁰ = 1200101120077 is a prime.

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 (1200101121103) 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 3 ways as a sum of consecutive naturals, for example, 1892903660 + ... + 1892904293.

It is an arithmetic number, because the mean of its divisors is an integer number (300971732343).

Almost surely, 2^{1200101121101} is an apocalyptic number.

It is an amenable number.

1200101121101 is a deficient number, since it is larger than the sum of its proper divisors (3785808271).

1200101121101 is an equidigital number, since it uses as much as digits as its factorization.

1200101121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3785808270.

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

Adding to 1200101121101 its reverse (1011211010021), we get a palindrome (2211312131122).

The spelling of 1200101121101 in words is "one trillion, two hundred billion, one hundred one million, one hundred twenty-one thousand, one hundred one".