21222120111067 has 2 divisors, whose sum is σ = 21222120111068. Its totient is φ = 21222120111066.

The previous prime is 21222120111029. The next prime is 21222120111107. The reversal of 21222120111067 is 76011102122212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21222120111067 - 2¹⁹ = 21222119586779 is a prime.

It is not a weakly prime, because it can be changed into another prime (21222220111067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611060055533 + 10611060055534.

It is an arithmetic number, because the mean of its divisors is an integer number (10611060055534).

Almost surely, 2^{21222120111067} is an apocalyptic number.

21222120111067 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222120111067 is an equidigital number, since it uses as much as digits as its factorization.

21222120111067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 28.

Adding to 21222120111067 its reverse (76011102122212), we get a palindrome (97233222233279).

The spelling of 21222120111067 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred twenty million, one hundred eleven thousand, sixty-seven".