102112201111 has 4 divisors (see below), whose sum is σ = 102270025872. Its totient is φ = 101954376352.

The previous prime is 102112201109. The next prime is 102112201123. The reversal of 102112201111 is 111102211201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102112201111 - 2¹ = 102112201109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102112201091 and 102112201100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102112202111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78911410 + ... + 78912703.

It is an arithmetic number, because the mean of its divisors is an integer number (25567506468).

Almost surely, 2^102112201111 is an apocalyptic number.

102112201111 is a deficient number, since it is larger than the sum of its proper divisors (157824761).

102112201111 is an equidigital number, since it uses as much as digits as its factorization.

102112201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157824760.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102112201111 its reverse (111102211201), we get a palindrome (213214412312).

The spelling of 102112201111 in words is "one hundred two billion, one hundred twelve million, two hundred one thousand, one hundred eleven".