211002120011111 has 16 divisors (see below), whose sum is σ = 248043527295648. Its totient is φ = 176955484118400.

The previous prime is 211002120011077. The next prime is 211002120011143. The reversal of 211002120011111 is 111110021200112.

It is a de Polignac number, because none of the positive numbers 2^k-211002120011111 is a prime.

It is a super-2 number, since 2×211002120011111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211002120011611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454900616 + ... + 455364221.

It is an arithmetic number, because the mean of its divisors is an integer number (15502720455978).

Almost surely, 2^{211002120011111} is an apocalyptic number.

211002120011111 is a deficient number, since it is larger than the sum of its proper divisors (37041407284537).

211002120011111 is a wasteful number, since it uses less digits than its factorization.

211002120011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910266482.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 211002120011111 its reverse (111110021200112), we get a palindrome (322112141211223).

The spelling of 211002120011111 in words is "two hundred eleven trillion, two billion, one hundred twenty million, eleven thousand, one hundred eleven".