22212122101111 has 4 divisors (see below), whose sum is σ = 22212149691424. Its totient is φ = 22212094510800.

The previous prime is 22212122101109. The next prime is 22212122101151. The reversal of 22212122101111 is 11110122121222.

It is a happy number.

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 22212122101111 - 2¹ = 22212122101109 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 (22212122101151) 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, 12550095 + ... + 14210176.

It is an arithmetic number, because the mean of its divisors is an integer number (5553037422856).

Almost surely, 2^{22212122101111} is an apocalyptic number.

22212122101111 is a deficient number, since it is larger than the sum of its proper divisors (27590313).

22212122101111 is an equidigital number, since it uses as much as digits as its factorization.

22212122101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27590312.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 22212122101111 its reverse (11110122121222), we get a palindrome (33322244222333).

The spelling of 22212122101111 in words is "twenty-two trillion, two hundred twelve billion, one hundred twenty-two million, one hundred one thousand, one hundred eleven".