1211022000011 has 4 divisors (see below), whose sum is σ = 1211251669992. Its totient is φ = 1210792330032.

The previous prime is 1211022000007. The next prime is 1211022000113. The reversal of 1211022000011 is 1100002201121.

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 1211022000011 - 2² = 1211022000007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211021999956 and 1211022000001.

It is not an unprimeable number, because it can be changed into a prime (1211022002011) 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, 114827081 + ... + 114837626.

It is an arithmetic number, because the mean of its divisors is an integer number (302812917498).

Almost surely, 2^{1211022000011} is an apocalyptic number.

1211022000011 is a deficient number, since it is larger than the sum of its proper divisors (229669981).

1211022000011 is an equidigital number, since it uses as much as digits as its factorization.

1211022000011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229669980.

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

Adding to 1211022000011 its reverse (1100002201121), we get a palindrome (2311024201132).

The spelling of 1211022000011 in words is "one trillion, two hundred eleven billion, twenty-two million, eleven", and thus it is an aban number.