1101001111211 has 4 divisors (see below), whose sum is σ = 1138966666800. Its totient is φ = 1063035555624.

The previous prime is 1101001111183. The next prime is 1101001111253. The reversal of 1101001111211 is 1121111001011.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1101001111211 - 2¹⁴ = 1101001094827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101001111192 and 1101001111201.

It is not an unprimeable number, because it can be changed into a prime (1101001113211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18982777751 + ... + 18982777808.

It is an arithmetic number, because the mean of its divisors is an integer number (284741666700).

Almost surely, 2^{1101001111211} is an apocalyptic number.

1101001111211 is a deficient number, since it is larger than the sum of its proper divisors (37965555589).

1101001111211 is an equidigital number, since it uses as much as digits as its factorization.

1101001111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37965555588.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 1101001111211 its reverse (1121111001011), we get a palindrome (2222112112222).

The spelling of 1101001111211 in words is "one trillion, one hundred one billion, one million, one hundred eleven thousand, two hundred eleven".