22021201111211 has 4 divisors (see below), whose sum is σ = 22070246103000. Its totient is φ = 21972156119424.

The previous prime is 22021201111121. The next prime is 22021201111213. The reversal of 22021201111211 is 11211110212022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22021201111211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22021201111211.

It is not an unprimeable number, because it can be changed into a prime (22021201111213) 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, 24522495221 + ... + 24522496118.

It is an arithmetic number, because the mean of its divisors is an integer number (5517561525750).

Almost surely, 2^{22021201111211} is an apocalyptic number.

22021201111211 is a deficient number, since it is larger than the sum of its proper divisors (49044991789).

22021201111211 is an equidigital number, since it uses as much as digits as its factorization.

22021201111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49044991788.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 22021201111211 its reverse (11211110212022), we get a palindrome (33232311323233).

The spelling of 22021201111211 in words is "twenty-two trillion, twenty-one billion, two hundred one million, one hundred eleven thousand, two hundred eleven".