210101112122211 has 16 divisors (see below), whose sum is σ = 311275081074720. Its totient is φ = 140061029679360.

The previous prime is 210101112122203. The next prime is 210101112122227. The reversal of 210101112122211 is 112221211101012.

It is a happy number.

210101112122211 is a `hidden beast` number, since 210 + 10 + 1 + 11 + 212 + 221 + 1 = 666.

It is not a de Polignac number, because 210101112122211 - 2³ = 210101112122203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210101112122261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176573910 + ... + 177759803.

It is an arithmetic number, because the mean of its divisors is an integer number (19454692567170).

Almost surely, 2^{210101112122211} is an apocalyptic number.

210101112122211 is a deficient number, since it is larger than the sum of its proper divisors (101173968952509).

210101112122211 is a wasteful number, since it uses less digits than its factorization.

210101112122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354355683 (or 354355677 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 210101112122211 its reverse (112221211101012), we get a palindrome (322322323223223).

The spelling of 210101112122211 in words is "two hundred ten trillion, one hundred one billion, one hundred twelve million, one hundred twenty-two thousand, two hundred eleven".