102100002220 has 24 divisors (see below), whose sum is σ = 214919309808. Its totient is φ = 40742990400.

The previous prime is 102100002217. The next prime is 102100002239. The reversal of 102100002220 is 22200001201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 102100002197 and 102100002206.

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, 6054526 + ... + 6071365.

It is an arithmetic number, because the mean of its divisors is an integer number (8954971242).

Almost surely, 2^102100002220 is an apocalyptic number.

102100002220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102100002220 is an abundant number, since it is smaller than the sum of its proper divisors (112819307588).

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

102100002220 is a wasteful number, since it uses less digits than its factorization.

102100002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12126321 (or 12126319 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 102100002220 its reverse (22200001201), we get a palindrome (124300003421).

The spelling of 102100002220 in words is "one hundred two billion, one hundred million, two thousand, two hundred twenty".