102221220120 has 32 divisors (see below), whose sum is σ = 306663660720. Its totient is φ = 27258992000.

The previous prime is 102221220077. The next prime is 102221220163. The reversal of 102221220120 is 21022122201.

It is an interprime number because it is at equal distance from previous prime (102221220077) and next prime (102221220163).

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 102221220120.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 425921631 + ... + 425921870.

Almost surely, 2^102221220120 is an apocalyptic number.

102221220120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102221220120 is an abundant number, since it is smaller than the sum of its proper divisors (204442440600).

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

102221220120 is a wasteful number, since it uses less digits than its factorization.

102221220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851843515 (or 851843511 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 102221220120 its reverse (21022122201), we get a palindrome (123243342321).

The spelling of 102221220120 in words is "one hundred two billion, two hundred twenty-one million, two hundred twenty thousand, one hundred twenty".