121432301100 has 216 divisors, whose sum is σ = 421075549440. Its totient is φ = 29023344000.

The previous prime is 121432301099. The next prime is 121432301119. The reversal of 121432301100 is 1103234121.

121432301100 is a `hidden beast` number, since 121 + 432 + 3 + 0 + 110 + 0 = 666.

It is a super-2 number, since 2×121432301100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 616521 + ... + 789279.

It is an arithmetic number, because the mean of its divisors is an integer number (1949423840).

Almost surely, 2^121432301100 is an apocalyptic number.

121432301100 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 121432301100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210537774720).

121432301100 is an abundant number, since it is smaller than the sum of its proper divisors (299643248340).

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

121432301100 is a wasteful number, since it uses less digits than its factorization.

121432301100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172861 (or 172851 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121432301100 its reverse (1103234121), we get a palindrome (122535535221).

The spelling of 121432301100 in words is "one hundred twenty-one billion, four hundred thirty-two million, three hundred one thousand, one hundred".