102111200211111 has 64 divisors (see below), whose sum is σ = 171468592339968. Its totient is φ = 52606868041728.

The previous prime is 102111200211103. The next prime is 102111200211127. The reversal of 102111200211111 is 111112002111201.

It is not a de Polignac number, because 102111200211111 - 2³ = 102111200211103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111200212111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 549491865 + ... + 549677661.

It is an arithmetic number, because the mean of its divisors is an integer number (2679196755312).

Almost surely, 2^{102111200211111} is an apocalyptic number.

102111200211111 is a deficient number, since it is larger than the sum of its proper divisors (69357392128857).

102111200211111 is a wasteful number, since it uses less digits than its factorization.

102111200211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232680.

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

Adding to 102111200211111 its reverse (111112002111201), we get a palindrome (213223202322312).

The spelling of 102111200211111 in words is "one hundred two trillion, one hundred eleven billion, two hundred million, two hundred eleven thousand, one hundred eleven".