102003221220 has 48 divisors (see below), whose sum is σ = 287693779968. Its totient is φ = 27002310400.

The previous prime is 102003221209. The next prime is 102003221233. The reversal of 102003221220 is 22122300201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 102003221220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6196356 + ... + 6212795.

It is an arithmetic number, because the mean of its divisors is an integer number (5993620416).

Almost surely, 2^102003221220 is an apocalyptic number.

102003221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102003221220 is an abundant number, since it is smaller than the sum of its proper divisors (185690558748).

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

102003221220 is a wasteful number, since it uses less digits than its factorization.

102003221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12409300 (or 12409298 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 102003221220 its reverse (22122300201), we get a palindrome (124125521421).

The spelling of 102003221220 in words is "one hundred two billion, three million, two hundred twenty-one thousand, two hundred twenty".