102111202112111 has 16 divisors (see below), whose sum is σ = 103620191735808. Its totient is φ = 100604199578400.

The previous prime is 102111202112047. The next prime is 102111202112119. The reversal of 102111202112111 is 111211202111201.

It is a cyclic number.

It is not a de Polignac number, because 102111202112111 - 2⁶ = 102111202112047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102111202112111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111202112119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 739293920 + ... + 739432026.

It is an arithmetic number, because the mean of its divisors is an integer number (6476261983488).

Almost surely, 2^{102111202112111} is an apocalyptic number.

102111202112111 is a deficient number, since it is larger than the sum of its proper divisors (1508989623697).

102111202112111 is a wasteful number, since it uses less digits than its factorization.

102111202112111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145222.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 102111202112111 its reverse (111211202111201), we get a palindrome (213322404223312).

The spelling of 102111202112111 in words is "one hundred two trillion, one hundred eleven billion, two hundred two million, one hundred twelve thousand, one hundred eleven".