121030033212 has 144 divisors (see below), whose sum is σ = 351559353600. Its totient is φ = 34721326080.

The previous prime is 121030033207. The next prime is 121030033283. The reversal of 121030033212 is 212330030121.

121030033212 is a `hidden beast` number, since 1 + 21 + 0 + 300 + 332 + 12 = 666.

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 47 ways as a sum of consecutive naturals, for example, 12763489 + ... + 12772967.

It is an arithmetic number, because the mean of its divisors is an integer number (2441384400).

Almost surely, 2^121030033212 is an apocalyptic number.

121030033212 is a gapful number since it is divisible by the number (12) 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 121030033212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175779676800).

121030033212 is an abundant number, since it is smaller than the sum of its proper divisors (230529320388).

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

121030033212 is a wasteful number, since it uses less digits than its factorization.

121030033212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11216 (or 11211 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 121030033212 its reverse (212330030121), we get a palindrome (333360063333).

The spelling of 121030033212 in words is "one hundred twenty-one billion, thirty million, thirty-three thousand, two hundred twelve".