22121102011111 has 2 divisors, whose sum is σ = 22121102011112. Its totient is φ = 22121102011110.

The previous prime is 22121102011097. The next prime is 22121102011171. The reversal of 22121102011111 is 11111020112122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22121102011111 - 2¹³ = 22121102002919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22121102011171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11060551005555 + 11060551005556.

It is an arithmetic number, because the mean of its divisors is an integer number (11060551005556).

Almost surely, 2^{22121102011111} is an apocalyptic number.

22121102011111 is a deficient number, since it is larger than the sum of its proper divisors (1).

22121102011111 is an equidigital number, since it uses as much as digits as its factorization.

22121102011111 is an odious number, because the sum of its binary digits is odd.

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

Adding to 22121102011111 its reverse (11111020112122), we get a palindrome (33232122123233).

The spelling of 22121102011111 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred two million, eleven thousand, one hundred eleven".