21222200120011 has 4 divisors (see below), whose sum is σ = 23151491040024. Its totient is φ = 19292909200000.

The previous prime is 21222200119957. The next prime is 21222200120027. The reversal of 21222200120011 is 11002100222212.

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 21222200120011 - 2²⁷ = 21222065902283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222200120071) 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, 964645459990 + ... + 964645460011.

It is an arithmetic number, because the mean of its divisors is an integer number (5787872760006).

Almost surely, 2^{21222200120011} is an apocalyptic number.

21222200120011 is a deficient number, since it is larger than the sum of its proper divisors (1929290920013).

21222200120011 is a wasteful number, since it uses less digits than its factorization.

21222200120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929290920012.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21222200120011 its reverse (11002100222212), we get a palindrome (32224300342223).

The spelling of 21222200120011 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred million, one hundred twenty thousand, eleven".