121102102200 has 96 divisors (see below), whose sum is σ = 375781863600. Its totient is φ = 32262466560.

The previous prime is 121102102189. The next prime is 121102102201. The reversal of 121102102200 is 2201201121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102102201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 522106 + ... + 717494.

Almost surely, 2^121102102200 is an apocalyptic number.

121102102200 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 121102102200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187890931800).

121102102200 is an abundant number, since it is smaller than the sum of its proper divisors (254679761400).

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

121102102200 is a wasteful number, since it uses less digits than its factorization.

121102102200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196441 (or 196432 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121102102200 its reverse (2201201121), we get a palindrome (123303303321).

The spelling of 121102102200 in words is "one hundred twenty-one billion, one hundred two million, one hundred two thousand, two hundred".