102122112111 has 16 divisors (see below), whose sum is σ = 140563691520. Its totient is φ = 65881236960.

The previous prime is 102122112107. The next prime is 102122112137. The reversal of 102122112111 is 111211221201.

It is a happy number.

It is not a de Polignac number, because 102122112111 - 2² = 102122112107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102122112181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2767861 + ... + 2804513.

It is an arithmetic number, because the mean of its divisors is an integer number (8785230720).

Almost surely, 2^102122112111 is an apocalyptic number.

102122112111 is a deficient number, since it is larger than the sum of its proper divisors (38441579409).

102122112111 is a wasteful number, since it uses less digits than its factorization.

102122112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66646.

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

Adding to 102122112111 its reverse (111211221201), we get a palindrome (213333333312).

The spelling of 102122112111 in words is "one hundred two billion, one hundred twenty-two million, one hundred twelve thousand, one hundred eleven".