102120010 has 16 divisors (see below), whose sum is σ = 186406272. Its totient is φ = 40272400.

The previous prime is 102120001. The next prime is 102120013. The reversal of 102120010 is 10021201.

It is a junction number, because it is equal to n+sod(n) for n = 102119975 and 102120002.

It is not an unprimeable number, because it can be changed into a prime (102120013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71206 + ... + 72625.

It is an arithmetic number, because the mean of its divisors is an integer number (11650392).

Almost surely, 2^102120010 is an apocalyptic number.

102120010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102120010 is a deficient number, since it is larger than the sum of its proper divisors (84286262).

102120010 is a wasteful number, since it uses less digits than its factorization.

102120010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143909.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 102120010 is about 10105.4445721106. Note that the first 3 decimals coincide. The cubic root of 102120010 is about 467.4160448628.

Adding to 102120010 its reverse (10021201), we get a palindrome (112141211).

The spelling of 102120010 in words is "one hundred two million, one hundred twenty thousand, ten".