11021211230205 has 32 divisors (see below), whose sum is σ = 19706218939008. Its totient is φ = 5213285427200.

The previous prime is 11021211230191. The next prime is 11021211230213. The reversal of 11021211230205 is 50203211212011.

It is not a de Polignac number, because 11021211230205 - 2⁴ = 11021211230189 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 814569084 + ... + 814582613.

It is an arithmetic number, because the mean of its divisors is an integer number (615819341844).

Almost surely, 2^{11021211230205} is an apocalyptic number.

11021211230205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11021211230205 is a deficient number, since it is larger than the sum of its proper divisors (8685007708803).

11021211230205 is a wasteful number, since it uses less digits than its factorization.

11021211230205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629151757.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 11021211230205 its reverse (50203211212011), we get a palindrome (61224422442216).

The spelling of 11021211230205 in words is "eleven trillion, twenty-one billion, two hundred eleven million, two hundred thirty thousand, two hundred five".