102102120012111 has 4 divisors (see below), whose sum is σ = 136136160016152. Its totient is φ = 68068080008072.

The previous prime is 102102120012089. The next prime is 102102120012121. The reversal of 102102120012111 is 111210021201201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102102120012111 - 2¹⁷ = 102102119881039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102102120012121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17017020002016 + ... + 17017020002021.

It is an arithmetic number, because the mean of its divisors is an integer number (34034040004038).

Almost surely, 2^{102102120012111} is an apocalyptic number.

102102120012111 is a deficient number, since it is larger than the sum of its proper divisors (34034040004041).

102102120012111 is an equidigital number, since it uses as much as digits as its factorization.

102102120012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34034040004040.

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

Adding to 102102120012111 its reverse (111210021201201), we get a palindrome (213312141213312).

The spelling of 102102120012111 in words is "one hundred two trillion, one hundred two billion, one hundred twenty million, twelve thousand, one hundred eleven".