102100220220 has 24 divisors (see below), whose sum is σ = 285880616784. Its totient is φ = 27226725376.

The previous prime is 102100220179. The next prime is 102100220227. The reversal of 102100220220 is 22022001201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 102100220196 and 102100220205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102100220227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 850835109 + ... + 850835228.

It is an arithmetic number, because the mean of its divisors is an integer number (11911692366).

Almost surely, 2^102100220220 is an apocalyptic number.

102100220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102100220220 is an abundant number, since it is smaller than the sum of its proper divisors (183780396564).

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

102100220220 is a wasteful number, since it uses less digits than its factorization.

102100220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701670349 (or 1701670347 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 102100220220 its reverse (22022001201), we get a palindrome (124122221421).

The spelling of 102100220220 in words is "one hundred two billion, one hundred million, two hundred twenty thousand, two hundred twenty".