102120312200 has 96 divisors (see below), whose sum is σ = 244884504960. Its totient is φ = 39582816000.

The previous prime is 102120312167. The next prime is 102120312209. The reversal of 102120312200 is 2213021201.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (102120312209) 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, 895619 + ... + 1003181.

It is an arithmetic number, because the mean of its divisors is an integer number (2550880260).

Almost surely, 2^102120312200 is an apocalyptic number.

102120312200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102120312200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122442252480).

102120312200 is an abundant number, since it is smaller than the sum of its proper divisors (142764192760).

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

102120312200 is a wasteful number, since it uses less digits than its factorization.

102120312200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107727 (or 107718 counting only the distinct ones).

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

Adding to 102120312200 its reverse (2213021201), we get a palindrome (104333333401).

The spelling of 102120312200 in words is "one hundred two billion, one hundred twenty million, three hundred twelve thousand, two hundred".