211202101220111 has 2 divisors, whose sum is σ = 211202101220112. Its totient is φ = 211202101220110.

The previous prime is 211202101220087. The next prime is 211202101220141. The reversal of 211202101220111 is 111022101202112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211202101220111 - 2¹⁴ = 211202101203727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211202101220111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211202101220141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105601050610055 + 105601050610056.

It is an arithmetic number, because the mean of its divisors is an integer number (105601050610056).

Almost surely, 2^{211202101220111} is an apocalyptic number.

211202101220111 is a deficient number, since it is larger than the sum of its proper divisors (1).

211202101220111 is an equidigital number, since it uses as much as digits as its factorization.

211202101220111 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 211202101220111 its reverse (111022101202112), we get a palindrome (322224202422223).

The spelling of 211202101220111 in words is "two hundred eleven trillion, two hundred two billion, one hundred one million, two hundred twenty thousand, one hundred eleven".