22212220202111 has 4 divisors (see below), whose sum is σ = 22978158829800. Its totient is φ = 21446281574424.

The previous prime is 22212220202099. The next prime is 22212220202119. The reversal of 22212220202111 is 11120202221222.

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-22212220202111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22212220202119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382969313801 + ... + 382969313858.

It is an arithmetic number, because the mean of its divisors is an integer number (5744539707450).

Almost surely, 2^{22212220202111} is an apocalyptic number.

22212220202111 is a deficient number, since it is larger than the sum of its proper divisors (765938627689).

22212220202111 is an equidigital number, since it uses as much as digits as its factorization.

22212220202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765938627688.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22212220202111 its reverse (11120202221222), we get a palindrome (33332422423333).

The spelling of 22212220202111 in words is "twenty-two trillion, two hundred twelve billion, two hundred twenty million, two hundred two thousand, one hundred eleven".