102012201320 has 16 divisors (see below), whose sum is σ = 229527453060. Its totient is φ = 40804880512.

The previous prime is 102012201281. The next prime is 102012201329. The reversal of 102012201320 is 23102210201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 97817566564 + 4194634756 = 312758^2 + 64766^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102012201295 and 102012201304.

It is not an unprimeable number, because it can be changed into a prime (102012201329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1275152477 + ... + 1275152556.

Almost surely, 2^102012201320 is an apocalyptic number.

102012201320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102012201320 is an abundant number, since it is smaller than the sum of its proper divisors (127515251740).

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

102012201320 is a wasteful number, since it uses less digits than its factorization.

102012201320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2550305044 (or 2550305040 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 102012201320 its reverse (23102210201), we get a palindrome (125114411521).

The spelling of 102012201320 in words is "one hundred two billion, twelve million, two hundred one thousand, three hundred twenty".