121320330200100 has 54 divisors (see below), whose sum is σ = 380271834996690. Its totient is φ = 32352088053120.

The previous prime is 121320330199969. The next prime is 121320330200101. The reversal of 121320330200100 is 1002033023121.

121320330200100 is a `hidden beast` number, since 1 + 2 + 1 + 32 + 0 + 330 + 200 + 100 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 21781038344256 + 99539291855844 = 4667016^2 + 9976938^2 .

It is a super-2 number, since 2×121320330200100² (a number of 29 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (121320330200101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 67400182545 + ... + 67400184344.

Almost surely, 2^{121320330200100} is an apocalyptic number.

121320330200100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121320330200100 is an abundant number, since it is smaller than the sum of its proper divisors (258951504796590).

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

121320330200100 is a wasteful number, since it uses less digits than its factorization.

121320330200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134800366909 (or 134800366899 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 121320330200100 its reverse (1002033023121), we get a palindrome (122322363223221).

The spelling of 121320330200100 in words is "one hundred twenty-one trillion, three hundred twenty billion, three hundred thirty million, two hundred thousand, one hundred".