210211011220111 has 16 divisors (see below), whose sum is σ = 242812399824288. Its totient is φ = 179858340582400.

The previous prime is 210211011220081. The next prime is 210211011220129. The reversal of 210211011220111 is 111022110112012.

It is not a de Polignac number, because 210211011220111 - 2⁷ = 210211011219983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210211011220151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21210681 + ... + 29501101.

It is an arithmetic number, because the mean of its divisors is an integer number (15175774989018).

Almost surely, 2^{210211011220111} is an apocalyptic number.

210211011220111 is a deficient number, since it is larger than the sum of its proper divisors (32601388604177).

210211011220111 is a wasteful number, since it uses less digits than its factorization.

210211011220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8426042.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 210211011220111 its reverse (111022110112012), we get a palindrome (321233121332123).

The spelling of 210211011220111 in words is "two hundred ten trillion, two hundred eleven billion, eleven million, two hundred twenty thousand, one hundred eleven".