102120012012111 has 8 divisors (see below), whose sum is σ = 136210765194240. Its totient is φ = 68054633419032.

The previous prime is 102120012012103. The next prime is 102120012012173. The reversal of 102120012012111 is 111210210021201.

It is a happy number.

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

It is not a de Polignac number, because 102120012012111 - 2³ = 102120012012103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102127012012111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6343637871 + ... + 6343653968.

It is an arithmetic number, because the mean of its divisors is an integer number (17026345649280).

Almost surely, 2^{102120012012111} is an apocalyptic number.

102120012012111 is a deficient number, since it is larger than the sum of its proper divisors (34090753182129).

102120012012111 is a wasteful number, since it uses less digits than its factorization.

102120012012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12687294525.

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

Adding to 102120012012111 its reverse (111210210021201), we get a palindrome (213330222033312).

The spelling of 102120012012111 in words is "one hundred two trillion, one hundred twenty billion, twelve million, twelve thousand, one hundred eleven".