102517221930 has 64 divisors (see below), whose sum is σ = 251536993920. Its totient is φ = 26733256704.

The previous prime is 102517221901. The next prime is 102517221943. The reversal of 102517221930 is 39122715201.

It is a junction number, because it is equal to n+sod(n) for n = 102517221891 and 102517221900.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89226 + ... + 461514.

It is an arithmetic number, because the mean of its divisors is an integer number (3930265530).

Almost surely, 2^102517221930 is an apocalyptic number.

102517221930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 102517221930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125768496960).

102517221930 is an abundant number, since it is smaller than the sum of its proper divisors (149019771990).

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

102517221930 is a wasteful number, since it uses less digits than its factorization.

102517221930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372503.

The product of its (nonzero) digits is 7560, while the sum is 33.

The spelling of 102517221930 in words is "one hundred two billion, five hundred seventeen million, two hundred twenty-one thousand, nine hundred thirty".