102000120111 has 24 divisors (see below), whose sum is σ = 151445291504. Its totient is φ = 66105486720.

The previous prime is 102000120083. The next prime is 102000120121. The reversal of 102000120111 is 111021000201.

It is a happy number.

It is not a de Polignac number, because 102000120111 - 2³¹ = 99852636463 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 = 102000120093 and 102000120102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102000120121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 259155 + ... + 520731.

Almost surely, 2^102000120111 is an apocalyptic number.

102000120111 is a deficient number, since it is larger than the sum of its proper divisors (49445171393).

102000120111 is a wasteful number, since it uses less digits than its factorization.

102000120111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262791 (or 262788 counting only the distinct ones).

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

Adding to 102000120111 its reverse (111021000201), we get a palindrome (213021120312).

It can be divided in two parts, 102000 and 120111, that added together give a triangular number (222111 = T₆₆₆).

The spelling of 102000120111 in words is "one hundred two billion, one hundred twenty thousand, one hundred eleven".