10212211220111 has 2 divisors, whose sum is σ = 10212211220112. Its totient is φ = 10212211220110.

The previous prime is 10212211220047. The next prime is 10212211220119. The reversal of 10212211220111 is 11102211221201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10212211220111 - 2⁶ = 10212211220047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10212211220111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10212211220119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106105610055 + 5106105610056.

It is an arithmetic number, because the mean of its divisors is an integer number (5106105610056).

Almost surely, 2^{10212211220111} is an apocalyptic number.

10212211220111 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212211220111 is an equidigital number, since it uses as much as digits as its factorization.

10212211220111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 10212211220111 its reverse (11102211221201), we get a palindrome (21314422441312).

The spelling of 10212211220111 in words is "ten trillion, two hundred twelve billion, two hundred eleven million, two hundred twenty thousand, one hundred eleven".