22112221022011 has 4 divisors (see below), whose sum is σ = 22112246692224. Its totient is φ = 22112195351800.

The previous prime is 22112221022009. The next prime is 22112221022053. The reversal of 22112221022011 is 11022012221122.

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 22112221022011 - 2¹ = 22112221022009 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 22112221022011.

It is not an unprimeable number, because it can be changed into a prime (22112221022081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11496475 + ... + 13281316.

It is an arithmetic number, because the mean of its divisors is an integer number (5528061673056).

Almost surely, 2^{22112221022011} is an apocalyptic number.

22112221022011 is a deficient number, since it is larger than the sum of its proper divisors (25670213).

22112221022011 is an equidigital number, since it uses as much as digits as its factorization.

22112221022011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25670212.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22112221022011 its reverse (11022012221122), we get a palindrome (33134233243133).

The spelling of 22112221022011 in words is "twenty-two trillion, one hundred twelve billion, two hundred twenty-one million, twenty-two thousand, eleven".