11021212120011 has 4 divisors (see below), whose sum is σ = 14694949493352. Its totient is φ = 7347474746672.

The previous prime is 11021212119977. The next prime is 11021212120027. The reversal of 11021212120011 is 11002121212011.

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 11021212120011 - 2¹⁷ = 11021211988939 is a prime.

It is a super-2 number, since 2×11021212120011² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11021212128011) 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, 1836868686666 + ... + 1836868686671.

It is an arithmetic number, because the mean of its divisors is an integer number (3673737373338).

Almost surely, 2^{11021212120011} is an apocalyptic number.

11021212120011 is a deficient number, since it is larger than the sum of its proper divisors (3673737373341).

11021212120011 is an equidigital number, since it uses as much as digits as its factorization.

11021212120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673737373340.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11021212120011 its reverse (11002121212011), we get a palindrome (22023333332022).

The spelling of 11021212120011 in words is "eleven trillion, twenty-one billion, two hundred twelve million, one hundred twenty thousand, eleven".