210011111111211 has 16 divisors (see below), whose sum is σ = 280112251397664. Its totient is φ = 139958690851584.

The previous prime is 210011111111209. The next prime is 210011111111273. The reversal of 210011111111211 is 112111111110012.

It is a happy number.

It is not a de Polignac number, because 210011111111211 - 2¹ = 210011111111209 is a prime.

It is a super-3 number, since 3×210011111111211³ (a number of 44 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (210011111111311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 570137151 + ... + 570505383.

It is an arithmetic number, because the mean of its divisors is an integer number (17507015712354).

Almost surely, 2^{210011111111211} is an apocalyptic number.

210011111111211 is a deficient number, since it is larger than the sum of its proper divisors (70101140286453).

210011111111211 is a wasteful number, since it uses less digits than its factorization.

210011111111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433870.

The product of its (nonzero) digits is 4, while the sum is 15.

Adding to 210011111111211 its reverse (112111111110012), we get a palindrome (322122222221223).

The spelling of 210011111111211 in words is "two hundred ten trillion, eleven billion, one hundred eleven million, one hundred eleven thousand, two hundred eleven".