102100404220 has 48 divisors (see below), whose sum is σ = 217179325440. Its totient is φ = 40313093184.

The previous prime is 102100404187. The next prime is 102100404223. The reversal of 102100404220 is 22404001201.

It is a junction number, because it is equal to n+sod(n) for n = 102100404194 and 102100404203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102100404223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11256127 + ... + 11265193.

It is an arithmetic number, because the mean of its divisors is an integer number (4524569280).

Almost surely, 2^102100404220 is an apocalyptic number.

102100404220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102100404220 is an abundant number, since it is smaller than the sum of its proper divisors (115078921220).

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

102100404220 is a wasteful number, since it uses less digits than its factorization.

102100404220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16282 (or 16280 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 102100404220 its reverse (22404001201), we get a palindrome (124504405421).

The spelling of 102100404220 in words is "one hundred two billion, one hundred million, four hundred four thousand, two hundred twenty".