210111000221211 has 16 divisors (see below), whose sum is σ = 282173938126080. Its totient is φ = 139061106122400.

The previous prime is 210111000221201. The next prime is 210111000221231. The reversal of 210111000221211 is 112122000111012.

It is a happy number.

It is not a de Polignac number, because 210111000221211 - 2⁹ = 210111000220699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210111000221201) 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, 1890801 + ... + 20586333.

It is an arithmetic number, because the mean of its divisors is an integer number (17635871132880).

Almost surely, 2^{210111000221211} is an apocalyptic number.

210111000221211 is a deficient number, since it is larger than the sum of its proper divisors (72062937904869).

210111000221211 is a wasteful number, since it uses less digits than its factorization.

210111000221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18722626.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 210111000221211 its reverse (112122000111012), we get a palindrome (322233000332223).

The spelling of 210111000221211 in words is "two hundred ten trillion, one hundred eleven billion, two hundred twenty-one thousand, two hundred eleven".