121200121021230 has 192 divisors, whose sum is σ = 325684849913280. Its totient is φ = 31251661056000.

The previous prime is 121200121021207. The next prime is 121200121021247. The reversal of 121200121021230 is 32120121002121.

121200121021230 is a `hidden beast` number, since 1 + 2 + 1 + 200 + 1 + 210 + 21 + 230 = 666.

It is a super-2 number, since 2×121200121021230² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3818393160 + ... + 3818424900.

It is an arithmetic number, because the mean of its divisors is an integer number (1696275259965).

Almost surely, 2^{121200121021230} is an apocalyptic number.

121200121021230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121200121021230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162842424956640).

121200121021230 is an abundant number, since it is smaller than the sum of its proper divisors (204484728892050).

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

121200121021230 is a wasteful number, since it uses less digits than its factorization.

121200121021230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41667 (or 41664 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 121200121021230 its reverse (32120121002121), we get a palindrome (153320242023351).

The spelling of 121200121021230 in words is "one hundred twenty-one trillion, two hundred billion, one hundred twenty-one million, twenty-one thousand, two hundred thirty".