121202132100 has 216 divisors, whose sum is σ = 418958809920. Its totient is φ = 26954484480.

The previous prime is 121202132081. The next prime is 121202132123. The reversal of 121202132100 is 1231202121.

121202132100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121202132100.

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, 432481 + ... + 655319.

It is an arithmetic number, because the mean of its divisors is an integer number (1939624120).

Almost surely, 2^121202132100 is an apocalyptic number.

121202132100 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 121202132100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209479404960).

121202132100 is an abundant number, since it is smaller than the sum of its proper divisors (297756677820).

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

121202132100 is a wasteful number, since it uses less digits than its factorization.

121202132100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222907 (or 222893 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 121202132100 its reverse (1231202121), we get a palindrome (122433334221).

The spelling of 121202132100 in words is "one hundred twenty-one billion, two hundred two million, one hundred thirty-two thousand, one hundred".