211111021200011 has 2 divisors, whose sum is σ = 211111021200012. Its totient is φ = 211111021200010.

The previous prime is 211111021199983. The next prime is 211111021200067. The reversal of 211111021200011 is 110002120111112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211111021200011 - 2¹⁴ = 211111021183627 is a prime.

It is a super-2 number, since 2×211111021200011² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211111021260011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105555510600005 + 105555510600006.

It is an arithmetic number, because the mean of its divisors is an integer number (105555510600006).

Almost surely, 2^{211111021200011} is an apocalyptic number.

211111021200011 is a deficient number, since it is larger than the sum of its proper divisors (1).

211111021200011 is an equidigital number, since it uses as much as digits as its factorization.

211111021200011 is an evil number, because the sum of its binary digits is even.

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

Adding to 211111021200011 its reverse (110002120111112), we get a palindrome (321113141311123).

The spelling of 211111021200011 in words is "two hundred eleven trillion, one hundred eleven billion, twenty-one million, two hundred thousand, eleven".