102111221100111 has 32 divisors (see below), whose sum is σ = 143254378291200. Its totient is φ = 64610978866560.

The previous prime is 102111221100103. The next prime is 102111221100137. The reversal of 102111221100111 is 111001122111201.

It is not a de Polignac number, because 102111221100111 - 2³ = 102111221100103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111221100181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41188645 + ... + 43597326.

It is an arithmetic number, because the mean of its divisors is an integer number (4476699321600).

Almost surely, 2^{102111221100111} is an apocalyptic number.

102111221100111 is a deficient number, since it is larger than the sum of its proper divisors (41143157191089).

102111221100111 is a wasteful number, since it uses less digits than its factorization.

102111221100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84786239.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 102111221100111 its reverse (111001122111201), we get a palindrome (213112343211312).

The spelling of 102111221100111 in words is "one hundred two trillion, one hundred eleven billion, two hundred twenty-one million, one hundred thousand, one hundred eleven".