22111000021109 has 2 divisors, whose sum is σ = 22111000021110. Its totient is φ = 22111000021108.

The previous prime is 22111000021087. The next prime is 22111000021129. The reversal of 22111000021109 is 90112000011122.

It is an a-pointer prime, because the next prime (22111000021129) can be obtained adding 22111000021109 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21183033865009 + 927966156100 = 4602503^2 + 963310^2 .

It is a cyclic number.

It is not a de Polignac number, because 22111000021109 - 2²⁸ = 22110731585653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22111000021129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055500010554 + 11055500010555.

It is an arithmetic number, because the mean of its divisors is an integer number (11055500010555).

Almost surely, 2^{22111000021109} is an apocalyptic number.

It is an amenable number.

22111000021109 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111000021109 is an equidigital number, since it uses as much as digits as its factorization.

22111000021109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 22111000021109 in words is "twenty-two trillion, one hundred eleven billion, twenty-one thousand, one hundred nine".