2111220202111 has 2 divisors, whose sum is σ = 2111220202112. Its totient is φ = 2111220202110.

The previous prime is 2111220202103. The next prime is 2111220202121. The reversal of 2111220202111 is 1112020221112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2111220202111 - 2³ = 2111220202103 is a prime.

It is a super-2 number, since 2×2111220202111² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111220202121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055610101055 + 1055610101056.

It is an arithmetic number, because the mean of its divisors is an integer number (1055610101056).

Almost surely, 2^{2111220202111} is an apocalyptic number.

2111220202111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111220202111 is an equidigital number, since it uses as much as digits as its factorization.

2111220202111 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 16.

Adding to 2111220202111 its reverse (1112020221112), we get a palindrome (3223240423223).

The spelling of 2111220202111 in words is "two trillion, one hundred eleven billion, two hundred twenty million, two hundred two thousand, one hundred eleven".