22220112212011 has 4 divisors (see below), whose sum is σ = 25394413956592. Its totient is φ = 19045810467432.

The previous prime is 22220112212009. The next prime is 22220112212041. The reversal of 22220112212011 is 11021221102222.

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

It is not a de Polignac number, because 22220112212011 - 2¹ = 22220112212009 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 22220112212011.

It is not an unprimeable number, because it can be changed into a prime (22220112212041) 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, 1587150872280 + ... + 1587150872293.

It is an arithmetic number, because the mean of its divisors is an integer number (6348603489148).

Almost surely, 2^{22220112212011} is an apocalyptic number.

22220112212011 is a deficient number, since it is larger than the sum of its proper divisors (3174301744581).

22220112212011 is an equidigital number, since it uses as much as digits as its factorization.

22220112212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3174301744580.

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

Adding to 22220112212011 its reverse (11021221102222), we get a palindrome (33241333314233).

The spelling of 22220112212011 in words is "twenty-two trillion, two hundred twenty billion, one hundred twelve million, two hundred twelve thousand, eleven".