121433423100 has 144 divisors (see below), whose sum is σ = 383570449920. Its totient is φ = 29416716800.

The previous prime is 121433423063. The next prime is 121433423123. The reversal of 121433423100 is 1324334121.

It is a happy number.

It is a super-2 number, since 2×121433423100² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4716061 + ... + 4741739.

It is an arithmetic number, because the mean of its divisors is an integer number (2663683680).

Almost surely, 2^121433423100 is an apocalyptic number.

121433423100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121433423100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191785224960).

121433423100 is an abundant number, since it is smaller than the sum of its proper divisors (262137026820).

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

121433423100 is a wasteful number, since it uses less digits than its factorization.

121433423100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27140 (or 27133 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 121433423100 its reverse (1324334121), we get a palindrome (122757757221).

The spelling of 121433423100 in words is "one hundred twenty-one billion, four hundred thirty-three million, four hundred twenty-three thousand, one hundred".