102011500 has 24 divisors (see below), whose sum is σ = 222794208. Its totient is φ = 40804400.

The previous prime is 102011491. The next prime is 102011521. The reversal of 102011500 is 5110201.

It is a happy number.

It is a super-2 number, since 2×102011500² = 20812692264500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101512 + ... + 102511.

It is an arithmetic number, because the mean of its divisors is an integer number (9283092).

Almost surely, 2^102011500 is an apocalyptic number.

102011500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102011500 is an abundant number, since it is smaller than the sum of its proper divisors (120782708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102011500 is a wasteful number, since it uses less digits than its factorization.

102011500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204042 (or 204030 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 10.

The square root of 102011500 is about 10100.0742571528. The cubic root of 102011500 is about 467.2504315810.

Adding to 102011500 its reverse (5110201), we get a palindrome (107121701).

The spelling of 102011500 in words is "one hundred two million, eleven thousand, five hundred".