10211222012111 has 2 divisors, whose sum is σ = 10211222012112. Its totient is φ = 10211222012110.

The previous prime is 10211222012081. The next prime is 10211222012183. The reversal of 10211222012111 is 11121022211201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10211222012111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10211222012111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10211222012011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105611006055 + 5105611006056.

It is an arithmetic number, because the mean of its divisors is an integer number (5105611006056).

Almost surely, 2^{10211222012111} is an apocalyptic number.

10211222012111 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211222012111 is an equidigital number, since it uses as much as digits as its factorization.

10211222012111 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 17.

Adding to 10211222012111 its reverse (11121022211201), we get a palindrome (21332244223312).

The spelling of 10211222012111 in words is "ten trillion, two hundred eleven billion, two hundred twenty-two million, twelve thousand, one hundred eleven".