121303213100 has 36 divisors (see below), whose sum is σ = 263603628288. Its totient is φ = 48452040000.

The previous prime is 121303213067. The next prime is 121303213153. The reversal of 121303213100 is 1312303121.

121303213100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×121303213100² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 795116 + ... + 935315.

It is an arithmetic number, because the mean of its divisors is an integer number (7322323008).

Almost surely, 2^121303213100 is an apocalyptic number.

121303213100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121303213100 is an abundant number, since it is smaller than the sum of its proper divisors (142300415188).

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

121303213100 is a wasteful number, since it uses less digits than its factorization.

121303213100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731146 (or 1731139 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 121303213100 its reverse (1312303121), we get a palindrome (122615516221).

The spelling of 121303213100 in words is "one hundred twenty-one billion, three hundred three million, two hundred thirteen thousand, one hundred".