21022202211011 has 4 divisors (see below), whose sum is σ = 21065368951152. Its totient is φ = 20979035470872.

The previous prime is 21022202210959. The next prime is 21022202211089. The reversal of 21022202211011 is 11011220222012.

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 21022202211011 - 2²² = 21022198016707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21022202211091) 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, 21583369340 + ... + 21583370313.

It is an arithmetic number, because the mean of its divisors is an integer number (5266342237788).

Almost surely, 2^{21022202211011} is an apocalyptic number.

21022202211011 is a deficient number, since it is larger than the sum of its proper divisors (43166740141).

21022202211011 is an equidigital number, since it uses as much as digits as its factorization.

21022202211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43166740140.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21022202211011 its reverse (11011220222012), we get a palindrome (32033422433023).

The spelling of 21022202211011 in words is "twenty-one trillion, twenty-two billion, two hundred two million, two hundred eleven thousand, eleven".