1200100211101 has 4 divisors (see below), whose sum is σ = 1309200230304. Its totient is φ = 1091000191900.

The previous prime is 1200100211033. The next prime is 1200100211131. The reversal of 1200100211101 is 1011120010021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200100211101 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 (1200100211131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54550009585 + ... + 54550009606.

It is an arithmetic number, because the mean of its divisors is an integer number (327300057576).

Almost surely, 2^{1200100211101} is an apocalyptic number.

1200100211101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200100211101 is a deficient number, since it is larger than the sum of its proper divisors (109100019203).

1200100211101 is a wasteful number, since it uses less digits than its factorization.

1200100211101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109100019202.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1200100211101 its reverse (1011120010021), we get a palindrome (2211220221122).

The spelling of 1200100211101 in words is "one trillion, two hundred billion, one hundred million, two hundred eleven thousand, one hundred one".