1211011000211 has 4 divisors (see below), whose sum is σ = 1211015187024. Its totient is φ = 1211006813400.

The previous prime is 1211011000169. The next prime is 1211011000229. The reversal of 1211011000211 is 1120001101121.

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 1211011000211 - 2¹⁴ = 1211010983827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211011000192 and 1211011000201.

It is not an unprimeable number, because it can be changed into a prime (1211011000811) 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, 1624535 + ... + 2249696.

It is an arithmetic number, because the mean of its divisors is an integer number (302753796756).

Almost surely, 2^{1211011000211} is an apocalyptic number.

1211011000211 is a deficient number, since it is larger than the sum of its proper divisors (4186813).

1211011000211 is an equidigital number, since it uses as much as digits as its factorization.

1211011000211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4186812.

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

Adding to 1211011000211 its reverse (1120001101121), we get a palindrome (2331012101332).

The spelling of 1211011000211 in words is "one trillion, two hundred eleven billion, eleven million, two hundred eleven", and thus it is an aban number.