121220102220300 has 54 divisors (see below), whose sum is σ = 379957675962228. Its totient is φ = 32325360591840.

The previous prime is 121220102220289. The next prime is 121220102220307. The reversal of 121220102220300 is 3022201022121.

121220102220300 is a `hidden beast` number, since 1 + 21 + 2 + 20 + 102 + 220 + 300 = 666.

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 (121220102220307) 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, 67344500334 + ... + 67344502133.

Almost surely, 2^{121220102220300} is an apocalyptic number.

121220102220300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121220102220300 is an abundant number, since it is smaller than the sum of its proper divisors (258737573741928).

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

121220102220300 is a wasteful number, since it uses less digits than its factorization.

121220102220300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134689002487 (or 134689002477 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 121220102220300 its reverse (3022201022121), we get a palindrome (124242303242421).

The spelling of 121220102220300 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred two million, two hundred twenty thousand, three hundred".