102120122111 has 16 divisors (see below), whose sum is σ = 124331424000. Its totient is φ = 81925509888.

The previous prime is 102120122099. The next prime is 102120122131. The reversal of 102120122111 is 111221021201.

It is not a de Polignac number, because 102120122111 - 2¹⁰ = 102120121087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102120122131) 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, 4614386 + ... + 4636463.

It is an arithmetic number, because the mean of its divisors is an integer number (7770714000).

Almost surely, 2^102120122111 is an apocalyptic number.

102120122111 is a deficient number, since it is larger than the sum of its proper divisors (22211301889).

102120122111 is an equidigital number, since it uses as much as digits as its factorization.

102120122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9250958.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102120122111 its reverse (111221021201), we get a palindrome (213341143312).

The spelling of 102120122111 in words is "one hundred two billion, one hundred twenty million, one hundred twenty-two thousand, one hundred eleven".