121326166200 has 192 divisors, whose sum is σ = 378353640960. Its totient is φ = 32161374720.

The previous prime is 121326166183. The next prime is 121326166223. The reversal of 121326166200 is 2661623121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 136782157 + ... + 136783043.

It is an arithmetic number, because the mean of its divisors is an integer number (1970591880).

Almost surely, 2^121326166200 is an apocalyptic number.

121326166200 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 121326166200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189176820480).

121326166200 is an abundant number, since it is smaller than the sum of its proper divisors (257027474760).

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

121326166200 is a wasteful number, since it uses less digits than its factorization.

121326166200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006 (or 1997 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

Adding to 121326166200 its reverse (2661623121), we get a palindrome (123987789321).

The spelling of 121326166200 in words is "one hundred twenty-one billion, three hundred twenty-six million, one hundred sixty-six thousand, two hundred".