123220302100 has 72 divisors (see below), whose sum is σ = 305710933248. Its totient is φ = 42229737600.

The previous prime is 123220301993. The next prime is 123220302109. The reversal of 123220302100 is 1203022321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123220302109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1745490 + ... + 1814710.

It is an arithmetic number, because the mean of its divisors is an integer number (4245985184).

Almost surely, 2^123220302100 is an apocalyptic number.

123220302100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123220302100 is an abundant number, since it is smaller than the sum of its proper divisors (182490631148).

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

123220302100 is a wasteful number, since it uses less digits than its factorization.

123220302100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71785 (or 71778 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 123220302100 its reverse (1203022321), we get a palindrome (124423324421).

The spelling of 123220302100 in words is "one hundred twenty-three billion, two hundred twenty million, three hundred two thousand, one hundred".