102111222111 has 8 divisors (see below), whose sum is σ = 136758827520. Its totient is φ = 67768882392.

The previous prime is 102111222107. The next prime is 102111222113. The reversal of 102111222111 is 111222111201.

It is a happy number.

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

It is not a de Polignac number, because 102111222111 - 2² = 102111222107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111222113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76315641 + ... + 76316978.

It is an arithmetic number, because the mean of its divisors is an integer number (17094853440).

Almost surely, 2^102111222111 is an apocalyptic number.

102111222111 is a deficient number, since it is larger than the sum of its proper divisors (34647605409).

102111222111 is a wasteful number, since it uses less digits than its factorization.

102111222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152632845.

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

Adding to 102111222111 its reverse (111222111201), we get a palindrome (213333333312).

The spelling of 102111222111 in words is "one hundred two billion, one hundred eleven million, two hundred twenty-two thousand, one hundred eleven".