102120111121111 has 8 divisors (see below), whose sum is σ = 103811621652000. Its totient is φ = 100435633898880.

The previous prime is 102120111121051. The next prime is 102120111121129. The reversal of 102120111121111 is 111121111021201.

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

It is a cyclic number.

It is not a de Polignac number, because 102120111121111 - 2⁷ = 102120111120983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102120111125111) 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, 1758297886 + ... + 1758355963.

It is an arithmetic number, because the mean of its divisors is an integer number (12976452706500).

Almost surely, 2^{102120111121111} is an apocalyptic number.

102120111121111 is a deficient number, since it is larger than the sum of its proper divisors (1691510530889).

102120111121111 is an equidigital number, since it uses as much as digits as its factorization.

102120111121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3516654329.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 102120111121111 its reverse (111121111021201), we get a palindrome (213241222142312).

The spelling of 102120111121111 in words is "one hundred two trillion, one hundred twenty billion, one hundred eleven million, one hundred twenty-one thousand, one hundred eleven".