102120000111 has 12 divisors (see below), whose sum is σ = 151493333992. Its totient is φ = 66239999856.

The previous prime is 102120000109. The next prime is 102120000113. The reversal of 102120000111 is 111000021201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (102120000109) and next prime (102120000113).

It is not a de Polignac number, because 102120000111 - 2¹ = 102120000109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102120000093 and 102120000102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102120000113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 153333001 + ... + 153333666.

Almost surely, 2^102120000111 is an apocalyptic number.

102120000111 is a deficient number, since it is larger than the sum of its proper divisors (49373333881).

102120000111 is a wasteful number, since it uses less digits than its factorization.

102120000111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306666710 (or 306666707 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 102120000111 its reverse (111000021201), we get a palindrome (213120021312).

The spelling of 102120000111 in words is "one hundred two billion, one hundred twenty million, one hundred eleven", and thus it is an aban number.