22220121122011 has 2 divisors, whose sum is σ = 22220121122012. Its totient is φ = 22220121122010.

The previous prime is 22220121122009. The next prime is 22220121122027. The reversal of 22220121122011 is 11022112102222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22220121122011 - 2¹ = 22220121122009 is a prime.

Together with 22220121122009, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22220121122011.

It is not a weakly prime, because it can be changed into another prime (22220121122411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110060561005 + 11110060561006.

It is an arithmetic number, because the mean of its divisors is an integer number (11110060561006).

Almost surely, 2^{22220121122011} is an apocalyptic number.

22220121122011 is a deficient number, since it is larger than the sum of its proper divisors (1).

22220121122011 is an equidigital number, since it uses as much as digits as its factorization.

22220121122011 is an evil number, because the sum of its binary digits is even.

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

Adding to 22220121122011 its reverse (11022112102222), we get a palindrome (33242233224233).

The spelling of 22220121122011 in words is "twenty-two trillion, two hundred twenty billion, one hundred twenty-one million, one hundred twenty-two thousand, eleven".