210111100122111 has 8 divisors (see below), whose sum is σ = 280148340667440. Its totient is φ = 140073963162432.

The previous prime is 210111100122103. The next prime is 210111100122163. The reversal of 210111100122111 is 111221001111012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 210111100122111 - 2³ = 210111100122103 is a prime.

It is a super-2 number, since 2×210111100122111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210111100127111) 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 7 ways as a sum of consecutive naturals, for example, 21033046 + ... + 29370243.

It is an arithmetic number, because the mean of its divisors is an integer number (35018542583430).

Almost surely, 2^{210111100122111} is an apocalyptic number.

210111100122111 is a deficient number, since it is larger than the sum of its proper divisors (70037240545329).

210111100122111 is a wasteful number, since it uses less digits than its factorization.

210111100122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51792825.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 210111100122111 its reverse (111221001111012), we get a palindrome (321332101233123).

The spelling of 210111100122111 in words is "two hundred ten trillion, one hundred eleven billion, one hundred million, one hundred twenty-two thousand, one hundred eleven".