102002120111 has 4 divisors (see below), whose sum is σ = 102114088224. Its totient is φ = 101890152000.

The previous prime is 102002120107. The next prime is 102002120119. The reversal of 102002120111 is 111021200201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111021200201 = 131071 ⋅847031.

It is a cyclic number.

It is not a de Polignac number, because 102002120111 - 2² = 102002120107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102002120092 and 102002120101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102002120119) 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, 55982690 + ... + 55984511.

It is an arithmetic number, because the mean of its divisors is an integer number (25528522056).

Almost surely, 2^102002120111 is an apocalyptic number.

102002120111 is a deficient number, since it is larger than the sum of its proper divisors (111968113).

102002120111 is an equidigital number, since it uses as much as digits as its factorization.

102002120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111968112.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 102002120111 its reverse (111021200201), we get a palindrome (213023320312).

The spelling of 102002120111 in words is "one hundred two billion, two million, one hundred twenty thousand, one hundred eleven".