121211112330 has 216 divisors, whose sum is σ = 402960746916. Its totient is φ = 25186613760.

The previous prime is 121211112287. The next prime is 121211112353. The reversal of 121211112330 is 33211112121.

121211112330 is a `hidden beast` number, since 1 + 212 + 11 + 112 + 330 = 666.

121211112330 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 115150956921 + 6060155409 = 339339^2 + 77847^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 420034 + ... + 647186.

Almost surely, 2^121211112330 is an apocalyptic number.

121211112330 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 121211112330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201480373458).

121211112330 is an abundant number, since it is smaller than the sum of its proper divisors (281749634586).

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

121211112330 is a wasteful number, since it uses less digits than its factorization.

121211112330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227202 (or 227181 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 121211112330 its reverse (33211112121), we get a palindrome (154422224451).

The spelling of 121211112330 in words is "one hundred twenty-one billion, two hundred eleven million, one hundred twelve thousand, three hundred thirty".