102111020211 has 64 divisors (see below), whose sum is σ = 144171593856. Its totient is φ = 64215244800.

The previous prime is 102111020201. The next prime is 102111020213. The reversal of 102111020211 is 112020111201.

It is not a de Polignac number, because 102111020211 - 2¹⁹ = 102110495923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102111020213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 242543781 + ... + 242544201.

It is an arithmetic number, because the mean of its divisors is an integer number (2252681154).

Almost surely, 2^102111020211 is an apocalyptic number.

102111020211 is a deficient number, since it is larger than the sum of its proper divisors (42060573645).

102111020211 is a wasteful number, since it uses less digits than its factorization.

102111020211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 102111020211 its reverse (112020111201), we get a palindrome (214131131412).

The spelling of 102111020211 in words is "one hundred two billion, one hundred eleven million, twenty thousand, two hundred eleven".