123221100100 has 36 divisors (see below), whose sum is σ = 305588329984. Its totient is φ = 42247234080.

The previous prime is 123221100091. The next prime is 123221100113. The reversal of 123221100100 is 1001122321.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88014372 + ... + 88015771.

Almost surely, 2^123221100100 is an apocalyptic number.

123221100100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123221100100 is an abundant number, since it is smaller than the sum of its proper divisors (182367229884).

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

123221100100 is a wasteful number, since it uses less digits than its factorization.

123221100100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176030164 (or 176030157 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 123221100100 its reverse (1001122321), we get a palindrome (124222222421).

The spelling of 123221100100 in words is "one hundred twenty-three billion, two hundred twenty-one million, one hundred thousand, one hundred".