102220201220 has 24 divisors (see below), whose sum is σ = 215197757208. Its totient is φ = 40786112000.

The previous prime is 102220201177. The next prime is 102220201249. The reversal of 102220201220 is 22102022201.

It can be written as a sum of positive squares in 4 ways, for example, as 32023818304 + 70196382916 = 178952^2 + 264946^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102220201195 and 102220201204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6364811 + ... + 6380850.

It is an arithmetic number, because the mean of its divisors is an integer number (8966573217).

Almost surely, 2^102220201220 is an apocalyptic number.

102220201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102220201220 is an abundant number, since it is smaller than the sum of its proper divisors (112977555988).

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

102220201220 is a wasteful number, since it uses less digits than its factorization.

102220201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12746071 (or 12746069 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 102220201220 its reverse (22102022201), we get a palindrome (124322223421).

The spelling of 102220201220 in words is "one hundred two billion, two hundred twenty million, two hundred one thousand, two hundred twenty".