100123220100 has 36 divisors (see below), whose sum is σ = 289689851024. Its totient is φ = 26699525280.

The previous prime is 100123220069. The next prime is 100123220123. The reversal of 100123220100 is 1022321001.

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

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 11 ways as a sum of consecutive naturals, for example, 166871734 + ... + 166872333.

Almost surely, 2^100123220100 is an apocalyptic number.

100123220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100123220100 is an abundant number, since it is smaller than the sum of its proper divisors (189566630924).

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

100123220100 is a wasteful number, since it uses less digits than its factorization.

100123220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333744084 (or 333744077 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 100123220100 its reverse (1022321001), we get a palindrome (101145541101).

The spelling of 100123220100 in words is "one hundred billion, one hundred twenty-three million, two hundred twenty thousand, one hundred".