22001022211111 has 2 divisors, whose sum is σ = 22001022211112. Its totient is φ = 22001022211110.

The previous prime is 22001022211087. The next prime is 22001022211127. The reversal of 22001022211111 is 11111222010022.

It is an a-pointer prime, because the next prime (22001022211127) can be obtained adding 22001022211111 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22001022211111 - 2³⁵ = 21966662472743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22001022218111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000511105555 + 11000511105556.

It is an arithmetic number, because the mean of its divisors is an integer number (11000511105556).

Almost surely, 2^{22001022211111} is an apocalyptic number.

22001022211111 is a deficient number, since it is larger than the sum of its proper divisors (1).

22001022211111 is an equidigital number, since it uses as much as digits as its factorization.

22001022211111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22001022211111 its reverse (11111222010022), we get a palindrome (33112244221133).

The spelling of 22001022211111 in words is "twenty-two trillion, one billion, twenty-two million, two hundred eleven thousand, one hundred eleven".